This issue is addressed in Veeam Backup for Microsoft 365 188.8.131.5204 P20230512.
After upgrading, run a full synchronization cycle for jobs that may be affected by this issue.
Use the following PowerShell cmdlet:
Replace JobName with the name of the affected job.
Get-VBOJob -Name "JobName" | Start-VBOJob -RunAsync -Full
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