iOS iPad app potential bug-- font size reduces after unlocking iPad

If you are in newsblur reading a story on iPad, and then press your power button to switch off the screen… Leaving newsblur as the active app when you do so, when you come back the text size in the article is reduced.

See screenshots-- see that in both screenshots it shows the font size as large.

If you go back and forth between stories a couple of times, the normal font size returns.