Inspect Templates + Mappings + Linux Share

We have a problem with CFM-files generated by our cms. These files are
created/saved on a shared linux volume.

Our default inspect setting is “never” but we have a mapping for the shared
directory with the setting “always”. But changes, in the generated files,
are visible in the browser.
I tried the same with a directory on the local system … created a new
directory, created a new mapping. First used “Inherit” -> file changes not
visible. Changed the setting to “always” … works perfectly.

Is this a know issue? Could this be a bad configured shared directory? Any
ideas?