Cannot put map in guild stash map tab

Attempted to control-click a T4 map into guild stash but map won't transfer from inventory to stash. Control-clicking the map does nothing, neither when viewing a normal guild storage tab or the mtx guild map tab.

Can manually drag map to guild storage tabs, and control-click it back into inventory, but cannot get map into guild stash tab at all.

Can control-click map into personal stash storage tabs, and control-click back to inventory (I don't own the mtx personal map tab).

Same results before and after identifying the map.

Update: was able to control-click the map into guild map tab after some time and after I ran a few more maps.

Also update: having the issue again with another map. Both this map and the other are T4 Ghetto maps, the first rare, the second normal.

Another update: issue happened again with a T2 Arachnid Nest map, so its not just T4 Ghetto.