Created attachment 144413 [details]
I found a bug on Impress.
The shadow doesn't display well in fullscreen in a specific case.
Here the step:
1 - Draw a circle
2 - Right clic on the shape > Area
3 - Choose a Bitmap
4 - Add a shadow
5 - Pass to fullscreen mode
The shadow takes the color of the bitmap.
I found a workaround: Set the shadow transparency to 1% and it works.
I join screenshot of the problem.
Created attachment 144414 [details]
Build ID: e78a6c4231cfb33643b45442b786e1e31b2781a8
CPU threads: 4; OS: Linux 4.15; UI render: default; VCL: gtk3;
Locale: ca-ES (ca_ES.UTF-8); Calc: threaded
Build ID: 3ca42d8d51174010d5e8a32b96e9b4c0b3730a53
Threads 4; Ver: 4.10; Render: default;
Version 18.104.22.168.alpha0+ (Build ID: efca6f15609322f62a35619619a6d5fe5c9bd5a)
*** This bug has been marked as a duplicate of bug 125901 ***