Slide out not showing on display

[ddayton1]

We have a 2017 Forester Class C. We bought new in April. Periodically the wardrobe slide does not show up on the slide display on the panel. This has not happened with the other 2 slides. This is sporadic. Rebooting doesn’t help.
I have tried calling tech support but they have not been able to help.

[OregonForester]

With my Forester, with full wall slide out, the engine has to be running and the parking. brake engaged.