I can acquire video of the glitch but it's pretty easy to recreate. Just start the game, have a short battle with another mech, then pause to redeploy.
Just recreated it now, thanks. I think this should be a simple fix. The particle engine is paused when you open up the options menu and then unpauses when you close the menu. When you hit redeploy it doesn't perform the same unpause event, it immediately restarts the whole room with the old particles still deactivated causing them to be frozen in place. Will patch this in the next build.