There aren't "big problems" because it works. When you put yourself in the corner of claiming "pure-canvas is irredeemably bad" when it's plainly not, then there's nothing practical on offer.

“It works” is a terrible defence, because of the different degrees of working.

I’m describing various specific ways in which it doesn’t work properly, in ways that stop users from doing things they may legitimately want to do, or which will frustrate some users, and you’re just disregarding them. I’m not being vague in most of my complaints, I’m being very specific.

It’s like you have a screw, and it’s worn enough that sometimes it makes the screwdriver slip, but you’re saying “just be careful, maybe apply a little more pressure, and it still works”.

How the hell you can claim “it works” if you can’t even select text out of the box, lmao?