Oddities with texture animations

Boinciel's been nagging me about this for a while now, but now I've started to examine this issue at last ...things are indeed weird.

Put it this way: if you make a flat animation and a texture animation which you intend to be synchronised with each other (for instance, a moving line drawn along the wall and floor, or in my case a solid-color wall and floor changing to different colors), you're more likely than not going to find this fails miserably! The texture animation apparently decides to start at a different frame in the animation to what you'd want most of the time, depending on the # of frames you (indirectly) set for it in the ANIMDEFS lump. There doesn't seem to be an obvious pattern with this yet though, as far as I can see here.

I'll upload an example wad for this issue later, I haven't access to my files right now...