Steps to reproduce the issue

* On an Impress slide or Draw page, insert two text frames with some dummy text.
* Select one frame, Format - Text: "Fit width to text" and "fit height to text"
can be changed.
* Select the two frames, then choose "Format - text": the two options for text
frames are greyed out, and non-relevant options (Fit to frame, Adjust to
contour) are active.

Expected behaviour: one can change the "Fit width" or "fit height" properties
for multiple text objects at once.