As cifs is kind of foreign concept to Linux, you cannot always use common Linux tools to change things like owner or permissions (especially regarding network shares). To get write access to your share, you will need to add options to your /etc/fstab entry, more specific the options uid and gid. Currently, the user root is mounting your network share during ...
Try killing the gvfs process. It will automatically restart when needed. I haven't had a chance to test this but hopefully it will work. You could also try disabling and re-enabling networking.
Files just shows whatever gvfs gives to it so it is not really a bug in Files as such (unless other file managers do not suffer from the problem).
If you are comfortable using the command line, the advice here will help you:
Basically, you need to create an entry in /etc/fstab that will try to mount your drive with password provided automatically.
Perhaps there is a way the GUI could be improved, but in the short term this should solve your ...
This is a bug which is currently being worked on - see:
In the meantime, you could try creating and renaming the file locally and then uploading it.
Files is intentionally set to not thumbnail remote files by default in order to reduce network traffic.
There is a branch to provide an option to turn thumbnailing on - see:
but it needs some more work and other branches have a higher priority.
I use another method to mount my SMB shares. I have a script with a line like the following for each share:
gvfs-mount smb://<SERVER>/<SHARE> &
The commands are run in the background so any delays in mounting don't hold up other things. I then created a .desktop file to autostart the script at boot.
This is particularly useful on my work ...