I believe this bug to be present for all characters in all locations since patch 6.45 raised the BLU level cap to 80. (However, I did not test this in 6.40, and it's possible the bug was introduced with Anabaseios.) For clarity in filling out this form and explaining the bug, I am presenting a specific reproduction as an example.

Date & Time: July 26, 2023, 7:21 PM Eastern Daylight Time
Frequency: Constant since patch 6.45
World name: Jenova (though likely not limited to any specific World Server)
Character name: Aurelle Deresnels (though likely not limited to any specific character)
Retainer name: N/A
NPC name: N/A
Monster name: Striking Dummy (but probably occurs with any overworld monster)
Class/Level: BLU 80 (may well occur with any level 57 or higher to obtain Black Knight's Tour)
Party or solo: Solo (but probably also occurs in parties)
In-game time: 10:38 AM (I highly doubt this is dependent on Eorzean time)
Area and coordinates: Kholusia X=35.7, Y=26.9, Z=0.2 (also occurs in other overworld zones at minimum, not limited to Shadowbringers)
Housing: N/A

Steps:
1. Select an overworld monster, not part of a leve or FATE, that is at or below the level of one's BLU. For this example reproduction, I have used the Kholusia striking dummies at the given coordinates.
2. In the Blue Magic Spellbook, select as active actions both Black Knight's Tour (#66) and a damaging spell that does not say it removes binds. For this example reproduction, I have used Sonic Boom (#63), though other spells such as Water Cannon (#1) likely work as well.
3. Ensure that one does not have one's chocobo companion able to attack in any form.
4. Go to the chosen monster and target such a monster that has not been recently bound and so is not resistant to binds.
5. Cast Black Knight's Tour at the targeted monster.
6. Observe the Bind debuff on the monster, starting at a 20 second duration.
7. While the Bind debuff still has at least several seconds remaining, cast Sonic Boom at the targeted monster.
8. Observe that as soon as the monster is hit by Sonic Boom, the Bind disappears.
9. Kill the targeted monster or otherwise leave combat.
10. Now ensure that one's chocobo companion is summoned, but not able to attack enemies.
11. As in step 4, target one of the chosen monsters that has not been recently bound and so is not resistant to binds.
12. Cast Black Knight's Tour at the targeted monster.
13. Observe the Bind debuff on the monster, again starting at a 20 second duration.
14. Order one's chocobo companion to attack.
15. Observe that chocobo attacks can also clear the Bind debuff before it wears off.

The expected behavior is that the Bind remains in place until the duration expires or the status effect is explicitly cleared. Bind is not Sleep and does not customarily clear upon taking any damage, as we can well observe in PvP with player characters taking damage and remaining bound.

Further, maintaining the expected behavior is essential to the functionality of White Knight's Tour (#65), which offers greater potency on bound enemies in exchange for clearing the Bind. If a BLU permits their chocobo to attack, their chocobo can clear the bind before they can cast White Knight's Tour and they lose the interaction... but if they don't let their chocobo attack, they also lose out on damage regardless of how they accomplish that.

I specified that the test monster not be part of a leve or FATE to show that no undue rewards could be achieved by restoring the expected behavior - plain overworld monsters drop nothing interesting, especially since Bind is significantly weaker than the instant death of Ultravibration (#92). Please return the expected behavior so that BLUs can understand and apply our spells based on the tooltips.


Connection Specs
- Type of internet connection/provider: Cable, Rogers
- Modem maker/model number: Hitron, CODA-4582U


■ PC Specs

To obtain the system information, open the FFXIV launcher and select Config → System Information → Display.

-=-=-=-=- System Information -=-=-=-=-

SYSTEM_OS Windows 10 Pro 64-bit (6.2, Build 9200) (19041.vb_release.191206-1406)
SYSTEM_CPU Intel(R) Core(TM) i7-10700 CPU @ 2.90GHz (16 CPUs), ~2.9GHz
SYSTEM_CORE_NUM SYSTEM_CORE_LOGIC 16 SYSTEM_CORE_PHYSICS 8
SYSTEM_BIOS 2.0.13
SYSTEM_LANGUAGE English (Regional Setting: English)
SYSTEM_MEMORY 16118.418MB
SYSTEM_VIRTUAL_MEMORY 134217727.875MB
SYSTEM_PAGE_FILE 28918.418MB
SYSTEM_STORAGE C:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 933.260GB SYSTEM_FREEDISC_SPACE 735.239GB
SYSTEM_STORAGE D:\ SYSTEM_HARDDISK_DRIVE SYSTEM_TOTALDISC_SPACE 1862.891GB SYSTEM_FREEDISC_SPACE 1649.797GB
SYSTEM_DIRECTX_VERSION DirectX 12
SYSTEM_GRAPHICS Intel(R) UHD Graphics 630
SYSTEM_GRAPHICS_DEVICE \\.\DISPLAY5
SYSTEM_GRAPHICS_CHIP Intel(R) UHD Graphics Family
SYSTEM_GRAPHICS_MAKER Intel Corporation
SYSTEM_GRAPHICS_VRAM 128.000 MB
SYSTEM_GRAPHICS_SHARED_VRAM 8059.209 MB
SYSTEM_GRAPHICS_DAC Internal
SYSTEM_GRAPHICS_DISPLAY_MODE 1920 x 1080 (32 bit) (59Hz)
SYSTEM_GRAPHICS_DRIVER C:\Windows\System32\DriverStore\FileRepository\iigd_dch.inf_amd64_e0880bf48916d210\igdumdim64.dll,C:\Windows\System32\DriverStore\FileRepository\iigd_dch.inf_amd64_e0880bf48916d210\igd10iumd64.dll,C:\Windows\System32\DriverStore\FileRepository\iigd_dch.inf_amd64_e0880bf48916d210\igd10iumd64.dll,C:\Windows\System32\DriverStore\FileRepository\iigd_dch.inf_amd64_e0880bf48916d210\igd12umd64.dll
SYSTEM_GRAPHICS_DRIVER_VERSION 27.20.0100.9664
SYSTEM_GRAPHICS_DRIVER_DATE 5/31/2021 20:00:00
SYSTEM_GRAPHICS_DRIVER_LANGUAGE English
3.0
SYSTEM_GRAPHICS_PIXEL_SHADER 3.0
SYSTEM_GRAPHICS_VERTEX_TEXTURE SYSTEM_SUPPORT
SYSTEM_GRAPHICS NVIDIA GeForce RTX 2060 SUPER
SYSTEM_GRAPHICS_DEVICE Unknown
SYSTEM_GRAPHICS_CHIP NVIDIA GeForce RTX 2060 SUPER
SYSTEM_GRAPHICS_MAKER NVIDIA
SYSTEM_GRAPHICS_VRAM 16078 MB
SYSTEM_GRAPHICS_SHARED_VRAM SYSTEM_UNKNOWN
SYSTEM_GRAPHICS_DAC Integrated RAMDAC
SYSTEM_GRAPHICS_DISPLAY_MODE Unknown
SYSTEM_GRAPHICS_DRIVER C:\Windows\System32\DriverStore\FileRepository\nvdd.inf_amd64_ad96858edfdf0915\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvdd.inf_amd64_ad96858edfdf0915\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvdd.inf_amd64_ad96858edfdf0915\nvldumdx.dll,C:\Windows\System32\DriverStore\FileRepository\nvdd.inf_amd64_ad96858edfdf0915\nvldumdx.dll
SYSTEM_GRAPHICS_DRIVER_VERSION 31.00.0015.2824
SYSTEM_GRAPHICS_DRIVER_DATE 1/14/2023 20:00:00
SYSTEM_GRAPHICS_DRIVER_LANGUAGE English

SYSTEM_GRAPHICS_PIXEL_SHADER
SYSTEM_GRAPHICS_VERTEX_TEXTURE
SYSTEM_SOUND DELL S2421HN (Intel(R) Display Audio)
SYSTEM_SOUND_DEVICE_ID {A4A2E799-000B-4336-887C-E41C96714A30}
SYSTEM_SOUND_DEVICE_NAME IntcDAud.sys
SYSTEM_SOUND_DRIVER_VERSION 10.27.0.10
SYSTEM_SOUND_DRIVER_LANGUAGE English
SYSTEM_SOUND_DRIVER_DATE 4/15/2021 20:00:00
SYSTEM_SOUND Speakers (Logitech G933 Gaming Headset)
SYSTEM_SOUND_DEVICE_ID {23A0215A-8865-405B-9DD3-19A5F1744933}
SYSTEM_SOUND_DEVICE_NAME USBAUDIO.sys
SYSTEM_SOUND_DRIVER_VERSION 8.98.201.0
SYSTEM_SOUND_DRIVER_LANGUAGE English
SYSTEM_SOUND_DRIVER_DATE 3/7/2018 20:00:00
SYSTEM_INPUT {6F1D2B60-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Mouse
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 3 SYSTEM_GAMEPAD_BUTTON 8 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {6F1D2B61-D5A0-11CF-BFC7444553540000}
SYSTEM_INPUT_NAME Keyboard
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 128 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {90124AA0-9C1B-11EB-8001444553540000}
SYSTEM_INPUT_NAME USB Receiver
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 767 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {901271B0-9C1B-11EB-8002444553540000}
SYSTEM_INPUT_NAME USB Receiver
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 3 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {901271B0-9C1B-11EB-8004444553540000}
SYSTEM_INPUT_NAME USB Receiver
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {901298C0-9C1B-11EB-8005444553540000}
SYSTEM_INPUT_NAME USB Receiver
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {9012BFD0-9C1B-11EB-8006444553540000}
SYSTEM_INPUT_NAME USB Receiver
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {9012BFD0-9C1B-11EB-8007444553540000}
SYSTEM_INPUT_NAME USB Receiver
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {9012BFD0-9C1B-11EB-8008444553540000}
SYSTEM_INPUT_NAME Multi-media
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 7 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {90130DF0-9C1B-11EB-800B444553540000}
SYSTEM_INPUT_NAME Logitech G933 Gaming Wireless Headset
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 2 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {90133500-9C1B-11EB-800C444553540000}
SYSTEM_INPUT_NAME Logitech G933 Gaming Wireless Headset
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0
SYSTEM_INPUT {90133500-9C1B-11EB-800D444553540000}
SYSTEM_INPUT_NAME Logitech G933 Gaming Wireless Headset
SYSTEM_INPUT_REMARKS SYSTEM_GAMEPAD_AXIS 0 SYSTEM_GAMEPAD_BUTTON 0 SYSTEM_GAMEPAD_FOV 0

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-