Anytime I say anything against Firefox, I get called a lot of really bad things, including suggestion to kill myself, so don't worry, I dont expect anything else this time. Thats not the reason Im posting this. This is supposed to be a constructive UX review from one user, thats me. I usually use Brave, but every now and then go test other browsers. Im wondering what kind of experience anyone has with the same situation. They are mentioned in the order I noticed them.

1. Tabs slide. I dont like it. I want them to become small. It feels more robust. I never use hundreds of tabs and Im sure people who do that, need sliding tabs and tabs that group, but I dont. I found online to go specific setting to reduce the minimum size in settings, but they still slide. I have never needed to search online for such a specific setting for brave.
2. When I try to rearrange tabs, some movement may produce groups which I dont like. Its not as smooth as in chrome. Not as smooth, not as precise, sometimes instead of creating a new window it puts a link on the tool bar, sometimes when you move, you dont know where you are. Sometimes when i Detatch a tab it doesnt show it, but it opens the window that is below. Its feels flimsy, not as robust, a lot of times I dont get the result I want with engaging with tabs.
3. Some websites have issues. Modals in the wrong place or content out of place. Yes I know, probably the websites fault, but that doesnt help me.
4. In Brave when I go to youtube I can quickly select the transcript or a part of it with the mouse. Cant do it in Firefox. I have to got ctrl+a which selects also the parts that I dont want selected.
5. If an image is missing, I dont see an image missing icon, but empty space.
6. When i go into folders on my bookmark bar and open a link in another tab, it closes the menu. So when I want to open a few links from a folder, I have to open the folder each time.
7. Cant paste an image from the clipboard into a web app, nothing happens when I try.
8. Today (like a week ago) it didnt open youtube videos: The message "This content isn't available, try again later." Dont know why. but even if I tried to open again, refresh, in a new window, it didnt work. Worked normal on brave. At this point I went back to Brave.

Mobile specific

1. It asks me each time whether to open the app for youtube and I cant choose, no - dont ask me again. I had to go into settings.
2. Youtube audio stops when i close the phone. Still works on Brave.
3. It often shows me ads on youtube. I never seen an add on brave
4. A website (shop) where i shopped previously doesnt opne at all, youtube sometimes doesn't load until I refresh the page. Slow to load after