I planned a route on my phone (Android), briefed & flew on a tablet (Android too). Both devices had up-to-date (3.15.8 at that time) SD versions and charts. I noticed a discrepancy in secondary scenery data (ie. lakes were missing)  as follows:

After reinstalling Switzerland and Italy charts, the problem is gone: both show the lakes. I'm quite concerned as I cannot be sure anymore what else might be missing in the future without any warning.

Did anybody notice something similar? If you happen to have the same charts installed, please post a screenshot if the lakes happen to be missing on your end too.