iOS app dark theme not sticking

I use the dark theme in the iOS app. Lately that selection is not sticking and I have to often choose it again. Is this a known problem?

Thanks.

First I’ve heard of it! So is it possible you’re using two fingers to swipe up or down while on the feed list? Cause that will change themes. Try disabling that gesture under Settings > Gestures.

I do not see that under preferences. I am using v8.1 of NewsBlur on iOS 10.3.3.

See attached screenshot.