Precondition: `Preferences --> Advanced --> Use intermediate file on copy --> Always`. I'll update the issue accordingly - Create 10.000 files via console: `for i in {1..10000}; do touch $i; done` - Open that folder in list-view - `CTRL+A` - `CTRL+C` - `CTRL+V` This will result in the following critical: ``` (thunar:4972): thunar-CRITICAL **: 08:38:27.479: thunar_tree_view_model_dir_remove_file: assertion 'iter != ((void *)0)' failed thunar_file_reload - destroy for: 130 (Kopie 1).partial~ (thunar:4972): thunar-CRITICAL **: 08:38:27.481: thunar_tree_view_model_dir_remove_file: assertion 'iter != ((void *)0)' failed thunar_file_reload - destroy for: 131 (Kopie 1).partial~ (thunar:4972): thunar-CRITICAL **: 08:38:27.483: thunar_tree_view_model_dir_remove_file: assertion 'iter != ((void *)0)' failed thunar_file_reload - destroy for: 133 (Kopie 1).partial~ (thunar:4972): thunar-CRITICAL **: 08:38:27.488: thunar_tree_view_model_dir_remove_file: assertion 'iter != ((void *)0)' failed thunar_file_reload - destroy for: 366 (Kopie 1).partial~ (thunar:4972): thunar-CRITICAL **: 08:38:27.979: thunar_tree_view_model_dir_remove_file: assertion 'iter != ((void *)0)' failed thunar_file_reload - destroy for: 404 (Kopie 1).partial~ (thunar:4972): thunar-CRITICAL **: 08:38:28.129: thunar_tree_view_model_dir_remove_file: assertion 'iter != ((void *)0)' failed thunar_file_reload - destroy for: 873 (Kopie 1).partial~ ``` <details><summary>Click to expand Backtrace</summary> ``` thunar:ERROR:thunar-tree-view-model.c:2258:thunar_tree_view_model_dir_remove_file: assertion failed: (iter != NULL) Bail out! thunar:ERROR:thunar-tree-view-model.c:2258:thunar_tree_view_model_dir_remove_file: assertion failed: (iter != NULL) Thread 1 "thunar" received signal SIGABRT, Aborted. __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at ./nptl/pthread_kill.c:44 44 ./nptl/pthread_kill.c: Datei oder Verzeichnis nicht gefunden. (gdb) bt #0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at ./nptl/pthread_kill.c:44 #1 0x00007ffff6e9dd2f in __pthread_kill_internal (signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:78 #2 0x00007ffff6e4eef2 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26 #3 0x00007ffff6e39472 in __GI_abort () at ./stdlib/abort.c:79 #4 0x00007ffff7011ec8 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #5 0x00007ffff7071e1a in g_assertion_message_expr () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #6 0x000055555561999e in thunar_tree_view_model_dir_remove_file (node=node@entry=0x555555ed9a80, file=file@entry=0x55555699b5e0) at thunar-tree-view-model.c:2258 #7 0x0000555555619ae9 in _thunar_tree_view_model_dir_files_removed (node=0x555555ed9a80, files=<optimized out>) at thunar-tree-view-model.c:2521 #8 0x00007ffff71423b0 in g_closure_invoke () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #9 0x00007ffff7155076 in () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #10 0x00007ffff715bbf5 in g_signal_emit_valist () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #11 0x00007ffff715bdbf in g_signal_emit () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #12 0x00005555555bbe63 in thunar_folder_file_destroyed (file_monitor=<optimized out>, file=0x55555699b5e0, folder=0x555555cc2490) at thunar-folder.c:688 #13 0x00007ffff71423b0 in g_closure_invoke () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #14 0x00007ffff7155076 in () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #15 0x00007ffff715bbf5 in g_signal_emit_valist () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #16 0x00007ffff715bdbf in g_signal_emit () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #17 0x00005555555b7d25 in thunar_file_destroy (file=0x55555699b5e0) at thunar-file.c:4436 #18 0x00005555555b8e58 in thunar_file_reload (file=0x55555699b5e0) at thunar-file.c:4350 #19 0x00007ffff720d703 in () at /lib/x86_64-linux-gnu/libgio-2.0.so.0 #20 0x00007ffff71425a9 in () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #21 0x00007ffff715bbbf in g_signal_emit_valist () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #22 0x00007ffff715bdbf in g_signal_emit () at /lib/x86_64-linux-gnu/libgobject-2.0.so.0 #23 0x00007ffff72c250a in () at /lib/x86_64-linux-gnu/libgio-2.0.so.0 #24 0x00007ffff70487a9 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #25 0x00007ffff7048a38 in () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #26 0x00007ffff7048acc in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0 #27 0x00007ffff726865d in g_application_run () at /lib/x86_64-linux-gnu/libgio-2.0.so.0 ``` </details>