Describe the bug

The Progress texture animate weirdly when anchored to Personal Resource Bar
Do you have an error log of what happened?
There's no error or whatsoever, just the texture behaves weirdly

Screenshots
https://imgur.com/a/6mBd47A -> When not anchored
https://imgur.com/a/hQmcpa1 -> When being anchored

Link to texture file I used:

Did you try having WeakAuras as the only enabled addon and everything else (especially something like ElvUI) disabled?
Tested

Which version of WeakAuras are you using?
2.15.2

Was it working in a previous version? If yes, which was the last good one?
Havent tested yet, I'm afraid to mess up the current aura set up

Update: fixed by enabling the PRB option in interface, you can change the alpha of it later by some CVar

The link you posted went to a .pdf that didn't seem relevant, so I removed that link,