Final Fantasy Tactics: The War of the Lions

[LunaMoo]

As far as I can see nothing bugs out by using rush(aka dash) squire skill at least not on latest ppsspp(tested on v1.3-280-gfc9599e), so it might be your settings(especially if you used any speedhacks or dangerous settings like multithreading, emulated cpu clock etc.), cheats or simply game became unstable from playing for a very long time, abusing savestates simulates such situation hence emulators will show instability problems of games quite easily.

Quick solution for all of the above ~ You can try disabling any cheats you're using and restoring default settings, then restarting emulation and reloading game from normal save(avoiding past savestates completely). If the problem still happens, might be something with game copy or platform specific.