game goes into "combat mode" after resting

I have SOA+TOB+26498 with BG fixpack, BPdetectstat 1.2, P&P celestials, gMinion, eSeries, Banter packs v6, BG2 tweaks, slimGseries installed.

Sometimes when I rest, upon waking up, the game plays this "battle music",
and eSeries would think that we're in combat right now and fling spells like
defensive harmony, protection from normal missiles, and summon mordenkainen's sword
although there's no real enemy (with red circle) to be seen, so the spells are perfectly wasted.

This "battle music" would be instantly turned to "peaceful music" if I just hit R or something to
change the screen, then right back to the game screen.

Buth then it would be turned on again in a short time.

I'm currently playing chapter 4, at Brynnlaw.

Has anyone had a similar problem and solved it?