I was going to post this in general but seems like that's only for spam posts. I run in windowed mode (not full screen windowed) and I want to prevent accidental resizing by mousing over the edge of the window. Doesn't happen often, but in some thick brawls I have occasionally clicked and resized the screen.

Any ideas?

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Just found it - add to config.wtf:

SET windowResizeLock "1"