So apparently I broke the context menu and didn't realize it until after I released 128.7.0. If you used 128.7.0 and your context menu was broken, you may need to go to about:support and Clear startup cache.
The portable builds are fully portable, the profile directory is inside the browser folder. It does not touch appdata at all.
Notable bugs:
The 32 bit build is built with --disable-sandbox. With the sandbox enabled under Vista, the browser fails to open multiple processes which breaks the browser. The 64 bit build is fine. Considering Mypal68 globally disables the sandbox, I don't think it's that bad. If this really is a big issue then please pr a fix.
Changes ported over from later releases:
I guess I copied over the View image commit to 128, which means this now encounters #253 , I'll figure something out for 128.8.
Selection color on content no longer overridden by r3dfox colors.
White caption text option works again.
Publisher shows up as Eclipse Community instead of Mozilla in Programs and Features.
Haven't extensively stability tested.
Please let me know what bugs or issues you encounter with it.