Don't mark idle animations as bad when blocking them

CHANGELOG.md

@@ -117,6 +117,7 @@
     Bug #6711: Log time differs from real time
     Bug #6717: Broken script causes interpreter stack corruption
     Bug #6718: Throwable weapons cause arrow enchantment effect to be applied to the whole body
+    Bug #6730: LoopGroup stalls animation after playing :Stop frame until another animation is played
     Feature #890: OpenMW-CS: Column filtering
     Feature #1465: "Reset" argument for AI functions
     Feature #2491: Ability to make OpenMW "portable"

apps/openmw/mwmechanics/character.cpp

@@ -2457,7 +2457,7 @@ bool CharacterController::playGroup(const std::string &groupname, int mode, int
 
     // We should not interrupt persistent animations by non-persistent ones
     if (isPersistentAnimPlaying() && !persist)
-        return false;
+        return true;
 
     // If this animation is a looped animation (has a "loop start" key) that is already playing
     // and has not yet reached the end of the loop, allow it to continue animating with its existing loop count