Temporary SW's from SpyEffect.SuperWeapon do not disappear properly from sidebar

Superweapons granted by infiltrating building using SpyEffect.SuperWeapon without SpyEffect.SuperWeaponPermanent=yes do not immediately disappear from sidebar after being used, appearing to be stuck in 'fully charged' state judging by icon overlay, albeit no ready text overlay is displayed and clicking does nothing.

The icon will, however, disappear immediately if the list of objects owned by the player is updated in any way (building/training anything, delivery/paradrop, selling, killed/destroyed, etc). Infiltrating the building in question again without refreshing the object list in any way beforehand will restore the superweapon to usable state again, as expected.