when many tabs are opened, it becomes harder to maintain a good overview. I suggest the option of putting tabs of documents together in a group or stack, so that I can now work on other documents, but still can reopen the other tabs fast without having to close them before.
For example: I‘m working on my physics homework and my answer and exercise sheets are opened. But also, I do have to take a look from time to time into the maths and physics theory notes, but not often, and still, they are using up a lot of tab space. So the solution is, that I can stack all the theory sheets together in a group ready for anytime, but I‘m focussing on my exercise and answer sheets.