I finally managed to get this installed, after some struggles of my own making. Now ready to start testing it out.
First immediately noticeable bug: the zoom gesture doesn’t work any more. I.e. the one that lets you use the zoom with one hand by double-tapping into a sliding motion. Tried reporting it on the above link but it asks to sign up.
Potential issue (needs more testing): before just now the browser was stuck in desktop mode. In that state navigation was having serious issues. Interacting with site (clicking links & buttons, scrolling, etc) would stop working either immediately at page load or after one or two interactions (scroll). Zoom with two fingers did continue to work.
Page interaction like scrolling is absolutely critical to ensure it is 200% reliable because it is needed to access the browser menu. In this state, without access to the menu, there is nothing you can do other than kill and restart the browser.
Thanks again to everyone working on this!