Comment 5 for bug 1458694

So this was 2 bugs conflated it seems.
There was a warning/err for the input-stub in mir, that is actually covered and has a fix committed under this bug 1458689 (branch now attached here as well)

The second issue it seems is that the uitk via qt is asking for a shader extension to be used that is likely not supported by the emulator graphics platform. This will most likely need to have an error check added in order to accomodate the failure and use an alternate shader program (e.g. one without needing the extension)