cmake filter (incorrect switch between readonly and editable modes)

Hi,

for cmake project, the "Filter" field to filter cmake variables is bugged.

As soon as the cmake configuration is running, it becomes no longer editable.

But if the cmake configuration failed, it remains non-editable. So if a filter was already typed-in, you cannot erase it anymore, so you are not able to change non-visible (filtered) variables, so you cannot fix your configuration...

In that state, if you run a generation again, the Filter filed switches editable while generating, but switches back to non-editable as soon as the generation terminated.

Thanks.