Brush entities turn back into normal brushes after being deselected

[goatcheese3]

I have been having a big problem lately.
Whenever I create a brush entity (func_door, func_detail, etc.), it immediately turns back into a normal brush after I deselect it (as stated in the thread title).
The brush entites worked fine until about an hour ago, when they all reverted themselves to brushes for some reason.

EDIT: Thanks for the help! I should have closed the map before posting for help here. Hopefully my common sense won't fail me next time!

 

[Idolon]

I've had the same issue before, I fixed it by closing the map and re-opening it. If that doesn't work, restart Hammer.

 

[henke37]

Check if you have ignore groups on, it will do this. Technically, it is the brush selection buttons that default to being docked in the right sidebar, but eh.

 

[Crash]

Did you perhaps have Solids selected in the top right corner? This would do what you described.

For the uninformed:

Groups selects anything grouped together, whether tied by entity or grouping them manually.

Object selects only the object/ entity you click on. So say you have a bunch of separate func_details grouped together manually, this can be used to select only one of them.

Solids ignores all grouping and entity groups and selects only the brush/ entity you click on. So say you have a structure tied to one big func_detail, this can be used to pick a single brush out of that. When you go back to Groups or Objects, the entity will still be there.