sw v11.0.0 build 4193-17
This app regularly reboots the Roku while watching live streaming programming from through the PBS app. It does not behave this way with any of the other apps I use, to my recollection.
Whatever the issue with the PBS app that precipitates this, it seems that it should not be able to reboot the whole device, but at worst the app should die, and dump you back to the Home screen.
The specific behavior I observe is while using Private Listening - I don't recall if it happens without Private Listening, as that is how I most often use this particular channel. I know it is about to happen because the sound on the Private Listening goes silent for perhaps 30s+, but the video continues to play. After the period of silence, it eventually reboots the whole device.
It is not a guarantee that it happens, but it is certainly every few days. I use other apps in between. One day I had it reboot twice within 1 1/2 hrs.
When problems are confined to a particular channel, it may be that the channel didn't install properly, that it didn't update correctly, or that the installation has otherwise gotten corrupted. A reinstall may fix the problem, so give it a try.
Remove/reinstall procedure:
If the problem persists at this point, it typically means the current version of the channel app has a problem that must be addressed by the channel itself as they are the ones that create the Roku-compatible version of their app and provide it to Roku.