Scrolling through game log causes a mess

[supermini]

Whenever I try to scroll through the game log, it causes a huge mess, like this:

http://i.imgur.com/lSCHqq5.jpg

When that happens if I don't restart ToME I eventually get a crash.

I'm running ToME in Windows 7 on a laptop. Drivers are the latest available for the laptop (not the latest, proprietary bullshit unfortunately). I can run ToME on either the integrated graphics card (Intel HD 4000) or Radeon 7670, and it makes no difference. Switching resolutions or mode (borderless/fullscreen) doesn't make a difference. Turning off antialiased text doesn't make a difference. Turning shaders and framebuffers on or off doesn't make a difference. te4_log.txt doesn't seem to say anything interesting to my eyes, although I could supply the file if it would be useful.

I'm not sure what else is relevant, so feel free to ask.

[darkgod]

WOhhhhh "nice" ..
Happens each time ?

[0player]

It looks like the C code is reading garbage from random places of memory occupied by Lua strings. Some of these lines shouldn't even appear in the log.

[supermini]

WOhhhhh "nice" ..
Happens each time ?

When I open the log and start scrolling, it eventually happens no matter what. Sometimes it breaks after a second, sometimes after five.

The garbled mess that appears seems to pick up whatever else I was looking at before opening the log, but I'm not 100% on that. In the screenshot I posted, I was looking at key bindings before opening the log.