[SilentSoul]

Actually because the INVALID_TEXT_DRAW not being called when player click a player textdraw.

Quote:

When a player presses ESC to cancel selecting a textdraw, OnPlayerClickTextDraw is called with a textdraw ID of 'INVALID_TEXT_DRAW'. OnPlayerClickPlayerTextDraw won't be called also.

https://sampwiki.blast.hk/wiki/OnPlayerClickPlayerTextDraw