Created attachment 111894 [details]
The doc contains a frame, try setting any backgorund color, save close and re-open and the color is gone

When you create a text frame in a Writer document, you can assign a background color to it, which is correctly applied.

However, after saving (in .odt format) and closing the doc, upon reopening it the text frame will invariably revert to white background, whatever the colour you had set in the previous section.

This problem persists on any number of subsequent closing and reopening of the file.

Notice that other type of frame background (gradients, etc.) are instead correctly saved.

Moreover, notice that if you save the file in other formats (e.g. word .doc), the frame background color is instead retained correctly