shortcuts stop working

I don’t know If i am doing something wrong but I’ve noticed with the newest update that

if I leave touch designer open for a period of time and then come back to it the (P) shortcuts for parameter quit responding as well as (u) to go up in the network.

if I quit and restart the program they still won’t work.

If I restart my computer then they work again.

Is caps lock on? I’ve had space bar shortcut stop working on a computer permanently, but not this.