Hi. Perhaps this is an intended mechanic, however I do not believe I encountered this in the past.
Problem: When standing, your loc shifts slightly to your characters back. You can sit and stand repeatedly and "scoot" backwards by doing so.
This mild shift in loc causes channeling checks and spell interruptions if you try to quickly cast after standing.
I made an animated GIF that displays this in action (it was large, so I loaded it on Google Drive):
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