It seems raw images need to be converted BRGA -> RGBA. It was being converted on gtk2 code path, but gtk3 only uses `gtk_drag_set_icon_pixbuf`.
It simplified the gtk2 `DragView::View::expose` to paint with `gdk_cairo_set_source_pixbuf` (that is available since Gtk 2.8). The existing path seems to be converting again. Run the issue sample with `-Djdk.gtk.version=2` to test. ------------- Commit messages: - Fix JDK-8271398 - Merge branch 'openjdk:master' into master - Merge branch 'openjdk:master' into master - Merge pull request #18 from openjdk/master - Merge pull request #17 from openjdk/master - Merge pull request #16 from openjdk/master - Merge pull request #15 from openjdk/master - Merge pull request #14 from openjdk/master - Merge pull request #13 from openjdk/master - Merge pull request #12 from openjdk/master - ... and 8 more: https://git.openjdk.java.net/jfx/compare/ba61a173...de2d8ddc Changes: https://git.openjdk.java.net/jfx/pull/599/files Webrev: https://webrevs.openjdk.java.net/?repo=jfx&pr=599&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8271398 Stats: 24 lines in 1 file changed: 5 ins; 18 del; 1 mod Patch: https://git.openjdk.java.net/jfx/pull/599.diff Fetch: git fetch https://git.openjdk.java.net/jfx pull/599/head:pull/599 PR: https://git.openjdk.java.net/jfx/pull/599
