I keep doing stuff with tile numbers past the end of what LM supports (e.g. layer 3 tiles $200+, overworld tiles $300+). I understand that this is very niche, so I won't complain if you decide not to do anything about this.
First, a small bug(?): Layer 3 tiles $200+ are displayed as empty (all transparent) tiles in the overworld layer 3 editor but as repeats of $000-$1ff in the level preview. I assume that just one or the other is the intended behavior.
Second, a hopefully reasonable request: Could they not be empty/repeat tiles? I don't know the ideal way to display these tiles but empty tiles don't seem great, mainly because empty tiles show up a lot naturally whereas if a past-the-end tile shows up it is either by accident or as part of something complicated, and in either case they should be easy to spot. Similar logic applies for using repeats of earlier tiles. Replacing the all-$00 empty tile with an all-$55 alternating column tile would be good enough I think, since that's ugly and weird enough that it probably won't show up much in regular graphics.
Animations don't seem to be working anymore. Not sure if it's just my computer. They always worked before though.
Edit: nevermind for some reason wine in Linux is now starting lm with animations off. Pressing 6 fixes it.

Edit: nevermind for some reason wine in Linux is now starting lm with animations off. Pressing 6 fixes it.