Obviously extremely low priority, but figured it would be worth mentioning.
In Halo 5: Guardians, when boarding an enemy ghost in Firefight/Warzone, the ‘Boost Indicator’ which normally shows you how long your boost lasts is missing unless you exit the ghost and then re-enter it. The bug happens 100% of the time when replicated.
I cannot confirm the existence of this bug in other playlists (Social/Ranked) or if this bug applies to the Banshee as well which uses the same mechanic.