Veeam have just released Veeam O365 v5a.
Release notes here:
KB4078: Veeam Backup for Microsoft Office 365 5.0 cumulative patch KB4078
If you followed my previous post regarding issues, we’re currently testing to see if this resolves them.
(Veeam Backup for Office 365 V5 Show stopping bug | Veeam Community Resource Hub)