When a Hyper process quits unexpectedly, it causes other processes on the same node to restart. Some processes, including Backgrounder, can become stalled or hung in the middle of that restart, and become fully unavailable.
Additionally, you can identify this issue with the following steps:
2. The first of these will be the Hyper process. Note that the only process that Hyper should be restarting if it quits unexpectedly is Hyper itself.