I am using UMG to create a UI with multiple Text (TextBlock) widgets. The text is perfectly showing in the Unreal Editor, every preview and my HTML5 package. Only at the iOS build the text is not showing up although it is taking up space (I do not change the font color or alpha value at any time).
Any ideas why my text is not showing up with the iOS build?
I am using the font Roboto, which is the default Engine font. I noticed that GEngine->AddOnScreenDebugMessage(...) works fine to print text to the screen. Still, displaying text with UMG does not work, although the font gets packaged in my ipa/app package and I do not get any errors/warnings
Compiling the package with the emscripten optimization option -O3 fixed the problem. Everything is now as it should be. Seems like the option -Oz (as used by bCompileForSize) optimizes a bit too much.