Diary text scaled wrongly if going back and forwards between fullscreen and windowed

[somaen]

It's a bit hard to pinpoint the precise steps, but if you open the diary in fullscreen, read a few (but not all) pages, then switch to windowed mode and read a few more, you can end up in a state where the text is scaled according to the opposite mode (i.e. it has the size it would have had in fullscreen, except the window is smaller, or vice verca, it is as tiny as the window would imply, but on a fullscreen page.

Generally it seems that if you go from fullscreen to windowed and try to go backwards to a page you've already read in fullscreen, this is likely to happen.