Its an old veracrypt container from the time before i used linux (about 8 years ago) and, yes its filesystem is NTFS.
I have read Philms latest statement:
but i myself did not define any mount options in veracrypt.
So either veracrypt has to change its default mount behavior (by the way, its not only veracrypt, also cryptsetup is not able to mount the container with kernel 6.8) or i have to convert my container to another filesystem, i think.
Addentum:
I have copied contents from NTFS-veracryptfile to a newone formatted with exFAT and that has solved the problem for me!