Hopefully I am putting the requested issues in the right place (if not, please let me know and I'll move it); I will be adding to this over time as I encounter more:
System: M1 MacBook Pro, macOS Big Sur 11.3 running Apollo build with newer Avalonia

UI Issues:

• Apollo's toolbar/window icons will randomly render with extra grey pixels surrounding them, most other grey symbols will do this at some point as well (i.e +, x, buttons

• + symbols default to showing, expanded between group chains or anything similar (pattern frames, etc.). Hovering hides them the first time, then they act as normal

• Dials render incorrectly sometimes when being adjusted

• Clicking (or dragging) any draggable elements causes a macOS document icon to appear beside cursor (this screenshot shows the document icon in place of the cursor instead for some reason)

• Hovering over objects or interacting with nearby elements can cause rendering issues like this:

• Both small and large Launchpads in pattern editor will render wrong at random

• "Show Pattern Editor" text will get stuck being displayed sometimes when opening the editor

• Track window will occasionally completely stop responding to any input, except for the delete key and keyboard combinations (cmd+w to close window, etc.). Elements looking for cursor hover-state (i.e. + , window toolbar buttons), will highlight but don't work. Closing and reopening the track view fixes this.