TFS 1.X+ Map editor exit house disappear?

[bpm91]

hello i just started editing my map again, and the exit house appears when i add it, but when i save and close and open it again they disappear. does anyone know how to explain?I think they are like hidden

 

[Heyron]

It could be some hotkey you may have accidentally pressed. Certain keys make it impossible to view objects on the map.

 

[bpm91]

could you tell me what the key could be?

 

[Heyron]

In the "View" tab it is possible to see which shortcut keys are activated and deactivated, see which option refers to the houses.

 

[bpm91]

instead of importing the map I opened it, so they all appeared