Yeah, I wouldn’t flush it. We have septic, so even many brands of toilet paper are out of the question.. I did my own dissolving tests years ago – mason jars and various brand of TP (one sheet per jar + water and shake).
Some didn’t bother dissolving no matter how much I shook, others were almost instant. I found Angel Soft was the greatest compromise between speed and “doesn’t shed paper everywhere” and price. Still seems to hold true years later, although there’s a few brands that are fine. It’s more important identifying the “no-no” ones.