On master (247b0314320d499ae788b6ea993aa1d98e2d607e / r250962), WebKitGTK build. Running locally this Chromium test: * https://cs.chromium.org/chromium/src/third_party/blink/web_tests/fast/events/drag-and-drop-dataTransfer-types-nocrash.html?l=1&rcl=753caf715d8f30f0c673f1b4b36dadfc75c3201f With WebKitTestRunner crashes the runner right after: > (WebKitTestRunner:396583): Gdk-CRITICAL **: 16:52:06.965: gdk_wayland_window_get_wl_surface: assertion 'GDK_IS_WAYLAND_WINDOW (window)' failed in GTK code. Other tests affected: * third_party/blink/web_tests/fast/events/mousedown-inside-dragstart-should-not-cause-crash.html * third_party/blink/web_tests/compositing/drag-opacity-crash.html * third_party/blink/web_tests/http/tests/misc/drag-over-iframe-invalid-source-crash.html
*** This bug has been marked as a duplicate of bug 157179 ***