I've noticed a few people, myself included, are working with mods that now both contain custom state labels and A_Explode calls that don't use the default values. It would be awesome, Graf, if you could upload a binary of GZDoom that includes the A_Explode fix so we'd have something to work with while we wait for the next "real" release
EDIT: Of course, this request assumes that it actually is easier to create an interim GZDoom release with this fix than an interim ZDoom release with full custom label support...