Ok guys with new alpha 2.3.9 and 2.3.10 the tab button is working ane for example with Alt+C, T we should be able to change channel but it is strange because it’s only let us to choose nodes and i can’t or don’t know how change from private (primary) to LongFast (secondary) to send a message to LongFast.
Maybe some of you will figure it out…
Here is cheatsheet 
please let me know if you have simmilar issue