Map goes black when playing doom

[heikkilevanto]

A strange thing happened today. I had the connmap running under strace to see what it was doing. When I started to play freedoom2, the map suddenly switched to a black background. When I exited the game, the map again had transparent background. Soon after the map was not visible at all. The strace shows that the program was running all right.

I can easily reproduce the background issue, as soon as I start doom it happens, and gets back when I exit.

I have seen the map disappear a few times before, that's why I had strace running on it to see if the whole thing crashes, but does not seem like. But I have not found any good way to reproduce that.

None of this really bothers me, but I thought I should report it anyway.

[heikkilevanto]

I noticed that when I start doom, it opens an empty window, in which I can see part of the map, on black background. The real map has also got its background black. Then the splash screen appears and hides that map section.

I still don't know what makes this weird thing happen, maybe something in doom itself, your code, or some unexpected cross effect between them.

Like I said, this does not bother me, you can close it as "not planned". But I find it curious.