The other anecdote I have in favor of CF problems (I know I post this in most of these threads) is that when I had issues with the CF card in my Octatrack back in 2019, after driving 80 miles with the OT in the trunk during a cold snap where it was almost -10F outside, was thateven though I didn’t get any error messages and projects seemed to load fine (I also had some issues with projects getting corrupted but that started a couple days later) if a project got saved to the card and reloaded, all of the recorder settings for track 5 would be completely randomized. That included the default project, so if I turned the OT off and back on track 5’s settings would be completely different. Some of the trigs on a few tracks would get moved around or changed from trigs to trigless locks, too, but that was less consistent. It was all weird and hard to fgure out until the actual projects started to get corrupted on the card but using some old dedicated CF formatting program (I forget what it was, I tried two or three and only one of them would even complete a format) to do a LOW LEVEL format solved it and I didn’t have a single issue with that card until a couple months ago when I got an error message loading a project (but it still loaded fine and hasn’t given me another error since I saved it under a new name).
Point is, even if the card still seems to be working fine it can make counterintuitive problems happen. I guess it probably has to do with how the OT deals with bad sectors compared to a computer’s operating system. If the OT is doing something weird that I can’t figure out the first thing I do now is back up everything on my card and reformat it from a computer, just in case (in fact, with any old hardware that uses CF I do a low level format from a computer first and then format again on the hardware itself whnever I get a new card).