Using current version 15 of backup/restore on both servers, the backup job doesn’t complete and there are no indications in the log as to why.
On the spare, the restore process completes and everything looks good. The last line in the backup log on the spare shows that it finished successfully.
On the primary, the backup job stays alive and the last line in the log indicates that it is triggering the restore job on the spare. I have to eventually kill the process.
What is warm spare backup/restore waiting for at this point and not getting?
BTW I opened a ticket on this and got that it was not reproducible. But maybe someone here in the community has seen and solved this.