Transparency is not being applied to web browser inside of 3d widget on android.
Tested with Samsung Galaxy S5
4.19.2 CL 4033788 4.20p5 4173640 4.21 CL 4179794
1. Enable Web Browser plugin
2. Create a UMG Widget Blueprint
3. Add Web Browser
4. Set URL ( [Link Removed] provided by bug reporter ) Enable "Supports Transparency"
5. Create a BP based on Actor, Add Widget Component, Set Widget Class
6. Place Actor in Level, PIE
Result: Transparency functions on PC.
7. Launch on Android
Result: Transparency is not applied
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-61554 in the post.