Thats right! But in general, due to MSFS is so buggy I have the impression, as longer as MSFS is used without complete restart, as more problems occur. Therefore I restart the Sim (not the box) after few flights or after a flight longer then 60-90 minutes.
With this, Í’ve lost the Detent buttons only 2 times since this feature is available (since months) and I hadn’t the need for plug-out and plug-in. With these restarts till SU9 I could prevent the loss of to many flights at the log book. I think, this loss has also the reason in instable FS state after a sim duration longer then 60-90 minutes. With SU9 this duration becomes shorter. 
By the way, this instability after several flights I’ve observed in former MSFS too. In the meantime it is an enforced coffee break for me. 