Week 1 of reminding Jagex that dual wield magic offhands are still disappearing while in combat stance (apart from the new t95 ones), Also keepsakes are being disabled when you change any override.

Issue is known and is being investigated, unfortunately it has 2 things going against it, in the grand scheme of things its a minor issue, its not causing something to break or not function its just a visual issue and its resilient. The team has had a look at it from a few angles and not found a quick resolve, so its sitting in the spot of needs further investigation but not high priority so it's gonna be a little slow to turnaround.