The new left-side icon menu is a usability disaster. I don't know what any of these cryptic icons are and I don't expect I'll ever learn. Accessing the labels is inconvenient because on my main development machine it requires a click just to see what I'm doing, and once it comes up it occludes content (I tried on another computer with a larger monitor and the side menu auto-expanded, which is better, but doesn't help me. There seems to be no pattern which items are given icons and which items are hidden under the wastebasket "..." menu.

"Press [ to expand menu", is, I am serious, probably the *weirdest UX decision I have ever seen on a website". The only kind of software I think anyone would consider that sensible in is a command-line curses app. This is a website.

Expected behavior: Site navigation and actions should be accessible by labeled buttons or links which are visible at all times. Labels are more important than icons (because I know what "Pull Requests" means but I don't know what a box with an arrow in it is). If putting the buttons on the left side of the screen forces you to shrink those buttons until they are just incomprehensible icons, then this means you should not have put the buttons on the left side of the screen.

Marking "major" because if people who come to my site cannot find important verbs like "clone" or "issues" because they are hidden behind easy-to-overlook hieroglyphs, I will have to consider moving my files off Bitbucket. This is a site-breaking issue from my perspective.