Looking at the bug tracker having currently over 400 open issues, I figured I might create a topic first. Maybe some of these are already well-known, or easy to fix for myself. If I should open a bug report for any of those or all of those, just let me know.
So I got my new EOS 70D and installed ML on it (magiclantern-lua_fix.2018Sep17.70D112.zip) and at first glance, everything was fine. Until I noticed a bunch of bugs, some of them really annoying:
Please note that within "everything was fine" and "everything was ok" and "all hope is lost" I didn't do anything, not even taking pictures. Still just playing around with the menus, but didn't change any settings (except for focus peaking and zebras, those being on or off don't affect these bugs though).
1) Some menu items (of ML) disappear sometimes. E.g. the lua scripts and the modules tab just disappeared earlier on me. Had to restart the camera around 6 times until it re-appeared.
2) The LCD is sometimes kind-of f*&ked. Currently I only have this in the arkanoid game (which worked fine until yesterday!) but it happened in the menu before too.

Note that this is only on the LCD itself. Taking a screenshot of this (using the ML VRAM screenshot feature) shows the expected normal image.
3) When in the ML liveview and half-pressing the shutter button, I get these super annoying overlays from Canon:

This is how it should look:

4) Changing to any other display theme results in heavy, constant flickering: (GIF didn't catch it, but it's NOT only in the ML menu. It's everywhere.)

5) Not able to change anything in the ML menu at all. After pressing set, I can still cycle through the menu points instead of changing the option:

6) ML overlays do not appear (at all) while Wi-Fi is enabled, even when Wi-Fi isn't in use.
7)
USB connection doesn't work at all anymore. "dmesg -w" on the computer shows nothing. Camera on or off, SD card in or out - Same results. The same machine and cable worked fine two days ago in both darktable and the file manager. Will try on another machine soon, but worked on current 2 days ago. No changes (not even a reboot) have been made to PC in-between.Was due to Wi-Fi being on, not a ML bug. Is there a way to have Wi-Fi enabled and still keep USB port functionality using ML?
8) Shutter speed changes are sometimes ignored by the ML overlay. In normal overlay (canon liveview) it works fine. In ML sometimes I get this weird behaviour:
I decrease the shutter speed by one stop: It works. Camera's top LCD shows the change, so does ML.
I increase it by one stop: Camera top LCD shows the change, ML doesnt. I increase it another stop, ML shows it.
So basically ML's overlay is skipping one stop, but only when I increase the shutter speed. Decreasing works fine all the time.
Happened since the beginning, always: 3), 4), 6)
Happened since yesterday, but constant: 1), 2),
7)Happens sometimes, since beginning: 5), 8)
I'm sure there's been more that I forgot by now. I'll update as I find more. On a side note: Is there something I should backup just in case ML ends up bricking the camera itself?
I love ML so far but these bugs are really annoying, especially 5), 4) and 2) being quite major issues. If any more information is needed to debug, please ask.