I have the same issue, except Xbox.
Also happens on Xbox Series X, 1.29.9:
Split screen
One player goes in inventory or third person
The other player’s crosshair disappears
Once they return to first person or leave inventory, crosshair returns
Crosshair works if a player is in inventory while the other one is doing an action which would otherwise disappear the crosshair
I have the same issue, except Xbox.
Also happens on Xbox Series X, 1.29.9:
Split screen
One player goes in inventory or third person
The other player’s crosshair disappears
Once they return to first person or leave inventory, crosshair returns
Crosshair works if a player is in inventory while the other one is doing an action which would otherwise disappear the crosshair