With AnimationWeightedBlendFix set to Enabled, the begining of a characters walk animation using default playerscripts appears to skip a few frames and temporarily pause causing an overall jittery look. This is particularly noticeable if you tap a movement key such that you rapidly start and stop.
It happens in any game with AnimationWeightedBlendFix Enabled.
I only noticed this begin to occur about a day ago, the month or so I had it enabled I never noticed this and don’t believe it was an issue looking at recordings.
First is a video with it set to Default:
And a video with AnimationWeightedBlendFix set to Enabled:
The bug can be reproduced by creating a new place and enabling the AnimationWeightedBlendFix property of workspace and testing.