Curious semi-freeze/lock

Operating System: Windows 10

ISP: Virgin Media

Type of Internet Connection: Optic Fiber

Internet Connection Speed: 200Mbit/s

Date & Time: 17:26 BST 18th May 2021

Frequency: Once

Character Name: Ashpounder

Race: Galka

World: Shiva

Main Job: Monk

Support Job: None

Area and Coordinates: Bastok Markets (I-7)

Party or Solo: Solo

NPC Name: Specilox

Monster Name: None

Steps:
1. Used Behemoth Suit +1, but no item appeared in log.
2. Interacted with Specilox.
3. Camera locks on Specilox, but no dialogue options appear.
4. Camera cannot unlock in the same way you'd normally cancel an interaction.
5. Note that chatlog still registers new communication, other players are still visible moving around, the data transfer rate (up and down) continued changing as normal. Waited around five minutes to see if it would time out.
6. Only option was to shut FFXI down. Logging back in was fine. The Behemoth Suit +1 had not generated an item and the cooldown hadn't started, so no problems at all.

I'm only filing this report because there seem to be a few other issues coming up at the moment too, and I've not experienced an issue like this in fifteen years of playing (it was similar to an R0, but different in the ways I described). In my case, no harm done.