hello, i received a reply regarding a bug report through the support desk ingame. it requested me to add more detail to my report.

original report link: http://forum.square-enix.com/ffxiv/forum.php#threads/372210?p=4741641#post4741641

When submitting a bug report, please use the below template and thoroughly fill out the necessary information.

Date & Time: 4/08/2018
Frequency: randomly when attacked
World name: Malboro
Character name: Juria Blake
Retainer name: N/A
NPC name: N/A
Monster name: any monster
Class/Level: AST/70 but has also happened with BLM and DRK
Party or solo: any
In-game time: any
Area and coordinates: any
Housing: N/A
Steps:
1. use an instant cast type move and get hit while using it
2. notice if you have a tail or wearing a long piece of gear around your legs, it suddenly looks stiff while moving around. like your clothes are stuck to your legs and lost their natural flowing animation.
3. need to log out to fix this issue.

here is a link showing video proof of the animation bug i described. it also shows me logging out to fix the bug and show the difference: https://facebook.com/story.php?story_fbid=140055646906699&id=100027067937165

here is another link, showing video proof of my character being attacked while instant casting, then the bug occurs: https://facebook.com/story.php?story_fbid=140051756907088&id=100027067937165

this bug happens while playing on a playstation 4 console. not sure if it also applies to pc players. let me know if you need anymore information. i apologise for replying here instead of ingame, it was a far more convenient way to add the video links.