Hi John
I have a Frogspawn that was like that. I considered several of the usual things, like water parameters, lighting, being touched inappropriately (and no silver glove either
).
Eventually I moved it to a lower flow area where it could pick on a candycane.
..it seems happy now. I don't think it was just flow intensity, but what parts are hit and from where, seem to matter.
Chemical inhibition and/or tissue stress from flow seems to be the reason here, maybe your Bubble could use a different office window too?