How to Reproduce Yalm unequip bug.
Must be fixer with ability to grid yourself, must have Yalm and Yatamutchy Movement Predictor (which you can equip).
While you in Yalm, zone into mission or shop, right-click Yatamutchy Movement Predictor (YMP) to unequip Yalm. Cast your grid evac nano, exit grid and right click Yalm to equip it. It's all. Now you can't unequip Yalm without zoning.
How to cure: With Yalm in your pack (affected by that bug you will be in fly mode still), zone (whompah or zone border), equip Yalm, zone back. Now all must work as FC intended ;)
P. S. Probably you can Reproduce that bug even if you arn't fixer, but in team with fixer which will cast Group grid evac.