I am using the keypad 5 key for "optics". After today's dev update ver.1.37.128772 I have the following problem:
Usually a quick tap KP 5 brings the optics UP and another tap brings them down.
After today's update the KP 5 needs to be held down for almost a second before the action becomes permanent. A quick tap does a quick switch and back.
There is not conflict with any other action nor any malfunction of the KP 5 anywhere else, e.g in the controls section or outside the Sim.
If the "optics" is mapped to another Keypad key, it works properly.
There might be other keyboard keys with this problem. So far I found the Right CTRL to behave the same way.