Hmm, moved a module out of one of my racks, and half the modules were deleted from the rack. Using Chrome on Catalina.
After I moved the module out of the rack into the scratch area, I was typing the name of another module into the entry field when I got a generic error message about something going wrong. When I reloaded the page, half the modules were no longer in the rack or in the scratch area - they were deleted. Further refreshes, closing my browser and reloading did not restore the missing modules.
I realize this a free service, but this is frustrating after spending hours tweaking this. I do pay for the additional rack space, but I know I only have so much room to complain. But this is me shaking my tiny fist of righteousness. :D