Typeface sizes changing for no reason in 2.5.6

[Gsk01]

A very annoying and odd glitch in the new Affinity Publisher 2.5.6 update:
On version 2.5 When I had text in a story flowing across several pages using linked text boxes and opened up one of those boxes, it pulled up the text from the box proceeding one with no problem. When I do this now the 2.5.6 update makes the text that is pulled up much larger or much larger size then I have to go and reset all the type again. Then if I open up the text box again, it completely undoes what I fix. 

[MikeTO]

One of the two text frames likely has content scaling. Select the first frame and look at the bottom-right corner - is the outer handle (the Content Scaling handle) solid blue? If so, the frame's contents has been scaled. Then select the second frame and check it.

Double-click a solid blue Content Scaling handle to reset the frame to 100%. Then re-apply the formatting attributes or styles to make the text the correct size. After the two frames have the same content scaling, text will flow between them without changing size.

Cheers