ID 265806 - Execute Mode (-x) does not block the UI dialog boxes

Problem summary
Execute Mode (-x) does not block the UI dialog boxes:  "WARNING: Your file system is too slow".

Customer reported version
3.1v3
Customer reported platform
Linux, RHEL7

Steps to reproduce

1) Set up a Mari cache on a USB stick or a partition (harddrive or USB stick) that is formatted using a different file system to EXT or NTFS.

2) Run Mari Execute mode via your command line or terminal.

3) Observe that the UI window 'WARNING: Your file system is too slow' will still pop up.

Workaround
Try using a more common file system such as EXT or NTFS.

Reproduced by support
Windows 7 - 3.1v3, 3.2v1

Resolved
3.3v1

Expected behaviour
Running in execute mode should block all UI dialog windows

Actual behaviour
'WARNING: Your file system is too slow' still opens in the UI