Google Play stating "your APK does not seem to be designed for 7-inch tablets..."

Hi,

I have just noticed that recent updates of my app (using 2017.3.1p3) are:

• Marked by Google Play as not supporting tablets with an notice stating "your APK does not seem to be designed for 7-inch tablets."
• Tested (alpha rollout, automated google test) on phones only (there was Nexus 7 or 9 used previously).

I already tried modifying AndroidManifest (updated it with supported-screens) and tested also an empty project. In both cases the issue is there.

Anyone had something similar and can guide me how to solve it? Are you recent uploads to Google Play fine? Or they also have this "phones only" flag? Thanks for help!

regards,
Piotr