Are there known issues for FLR on virtual machines with dynamic disks (gpt)?

Doing a test recovery I found that I'm not able to recover data from the backup. Even though I receive everytime the backupjob took place a Successful completion of the backups. When trying to restore file I get this message:

Error while listing VM(s)Disk(s)Volume(s). FLR is not supported for other than NTFS File System.

I'running vembu on a Windows Server 2012R2 HyperV and the virtual machine is also a W2k12R2. When I turned my disk back from dynamic to basic, I than can successfully restore the data for backup taken after this change. Is anyone familiair with this issue? thanks!

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