It happened when i tried to use bucket fill tool on a layer.
GNU Image Manipulation Program version 2.10.20
git-describe: GIMP_2_10_20
Build: org.gimp.GIMP.flatpak.stable rev 0 for linux
# C compiler #
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-unknown-linux-gnu/9.2.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/bin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib --libexecdir=/usr/libexec --localstatedir=/var --sharedstatedir=/usr/com --mandir=/usr/share/man --infodir=/usr/share/info --enable-deterministic-archives --enable-shared --build=x86_64-pc-linux-gnu --host=x86_64-unknown-linux-gnu lt_cv_sys_lib_dlsearch_path_spec=/usr/lib/x86_64-linux-gnu --target=x86_64-unknown-linux-gnu --disable-multilib --enable-multiarch --disable-bootstrap --with-build-sysroot=/cross-installation --enable-languages=c,c++,fortran --enable-default-pie --enable-default-ssp --with-isl --enable-linker-build-id --disable-libstdcxx-filesystem-ts host_configargs=lt_cv_sys_lib_dlsearch_path_spec=/usr/lib/x86_64-linux-gnu target_configargs=lt_cv_sys_lib_dlsearch_path_spec=/usr/lib/x86_64-linux-gnu
Thread model: posix
gcc version 9.2.0 (GCC)
# Libraries #
using babl version 0.1.78 (compiled against version 0.1.78)
using GEGL version 0.4.24 (compiled against version 0.4.24)
using GLib version 2.64.4 (compiled against version 2.64.3)
using GdkPixbuf version 2.40.0 (compiled against version 2.40.0)
using GTK+ version 2.24.32 (compiled against version 2.24.32)
using Pango version 1.44.7 (compiled against version 1.44.7)
using Fontconfig version 2.13.1 (compiled against version 2.13.1)
using Cairo version 1.16.0 (compiled against version 1.16.0)
fatal error: Aborted
Stack trace:
/app/lib/libgimpbase-2.0.so.0(gimp_stack_trace_print+0x397)[0x7ff6c2c259e7]
gimp-2.10(+0xfa60d)[0x556b7fd0c60d]
gimp-2.10(gimp_fatal_error+0x1d)[0x556b7fd0ca4d]
gimp-2.10(+0xfb0df)[0x556b7fd0d0df]
/usr/lib/x86_64-linux-gnu/libpthread.so.0(+0x13adf)[0x7ff6c2099adf]
/usr/lib/x86_64-linux-gnu/libc.so.6(gsignal+0x145)[0x7ff6c1ef6605]
/usr/lib/x86_64-linux-gnu/libc.so.6(abort+0x12a)[0x7ff6c1edf898]
/usr/lib/x86_64-linux-gnu/libc.so.6(+0x22768)[0x7ff6c1edf768]
/usr/lib/x86_64-linux-gnu/libc.so.6(__assert_fail+0x45)[0x7ff6c1eeea45]
/usr/lib/x86_64-linux-gnu/libX11.so.6(+0x486c2)[0x7ff6c1c9c6c2]
/usr/lib/x86_64-linux-gnu/libX11.so.6(+0x4876c)[0x7ff6c1c9c76c]
/usr/lib/x86_64-linux-gnu/libX11.so.6(_XEventsQueued+0x59)[0x7ff6c1c9ca69]
/usr/lib/x86_64-linux-gnu/libX11.so.6(XPending+0x60)[0x7ff6c1c8e3a0]
/app/lib/libgdk-x11-2.0.so.0(+0x5eb65)[0x7ff6c2cf2b65]
/app/lib/libgdk-x11-2.0.so.0(+0x5ebe7)[0x7ff6c2cf2be7]
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_check+0x1d0)[0x7ff6c22a5960]
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x54ed1)[0x7ff6c22a5ed1]
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_loop_run+0x82)[0x7ff6c22a62b2]
gimp-2.10(app_run+0x36d)[0x556b7fd0bd9d]
gimp-2.10(main+0x37d)[0x556b7fd0b61d]
/usr/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf2)[0x7ff6c1ee1172]
gimp-2.10(_start+0x2d)[0x556b7fd0b7ad]
I also had an issue when trying to select a floating layer or selection layer using the ALT + click command, it happened all the time i tried it. I can show you what i was trying to do using a youtube link: https://www.youtube.com/watch?v=w-6h7cxJEXI&t=371s
I could not select the selection layer as seen at 6.09.
I tried to look online but i think i am only one having the issue.