Comment 9 for bug 1121169

Confirmed here too:

After deleting the autosave cache files, scanning a single Letter page, and selecting Crop the application spins unresponsively driving one core of the CPU hard for many seconds and repeats that after each subsequent mouse operation, preventing me from interacting with the crop function.

Program received signal SIGINT, Interrupt.
0x00007ffff546ecbd in read () from /lib/x86_64-linux-gnu/libpthread.so.0
(gdb) bt
#0 0x00007ffff546ecbd in read () from /lib/x86_64-linux-gnu/libpthread.so.0
#1 0x00007ffff6018a86 in ?? () from /usr/lib/x86_64-linux-gnu/libsqlite3.so.0
#2 0x00007ffff602c158 in ?? () from /usr/lib/x86_64-linux-gnu/libsqlite3.so.0
#3 0x00007ffff603ec19 in ?? () from /usr/lib/x86_64-linux-gnu/libsqlite3.so.0
#4 0x00007ffff603ec78 in ?? () from /usr/lib/x86_64-linux-gnu/libsqlite3.so.0
#5 0x00007ffff604b9d9 in ?? () from /usr/lib/x86_64-linux-gnu/libsqlite3.so.0
#6 0x00007ffff604f18c in ?? () from /usr/lib/x86_64-linux-gnu/libsqlite3.so.0
#7 0x00007ffff6053a51 in ?? () from /usr/lib/x86_64-linux-gnu/libsqlite3.so.0
#8 0x00007ffff607f617 in ?? () from /usr/lib/x86_64-linux-gnu/libsqlite3.so.0
#9 0x00007ffff6063341 in sqlite3_step () from /usr/lib/x86_64-linux-gnu/libsqlite3.so.0
#10 0x000000000042fb02 in autosave_manager_update_page (self=<optimised out>, page=0x6b52d0) at autosave-manager.c:1423
#11 0x00007ffff65b4620 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#12 0x00007ffff65c5f00 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#13 0x00007ffff65cdd11 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#14 0x00007ffff65ce4b9 in g_signal_emit_by_name () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#15 0x0000000000427a57 in user_interface_set_crop (self=<optimised out>, crop_name=<optimised out>) at ui.c:2807
#16 0x00007ffff65b4620 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#17 0x00007ffff65c5f00 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#18 0x00007ffff65cdd11 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#19 0x00007ffff65cdf92 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#20 0x00007ffff78fc3c4 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#21 0x00007ffff65b4620 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#22 0x00007ffff65c5544 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#23 0x00007ffff65cdd11 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#24 0x00007ffff65cdf92 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#25 0x000000000042a2c6 in crop_toolbutton_toggled_cb (widget=<optimised out>, self=<optimised out>) at ui.c:2880
#26 0x00007ffff65b48e7 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#27 0x00007ffff65cd2df in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#28 0x00007ffff65cdf92 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#29 0x00007ffff65b4620 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#30 0x00007ffff65c5f00 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#31 0x00007ffff65cdd11 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#32 0x00007ffff65cdf92 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#33 0x00007ffff7987b0f in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#34 0x00007ffff65b4620 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#35 0x00007ffff65c5544 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#36 0x00007ffff65cdd11 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#37 0x00007ffff65cdf92 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#38 0x00007ffff79874bd in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#39 0x00007ffff65b4620 in g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#40 0x00007ffff65c5544 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#41 0x00007ffff65cdd11 in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#42 0x00007ffff65cdf92 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#43 0x00007ffff77e0313 in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#44 0x00007ffff78af5ac in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#45 0x00007ffff65b48e7 in ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#46 0x00007ffff65cd2df in g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#47 0x00007ffff65cdf92 in g_signal_emit () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
#48 0x00007ffff79de77e in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#49 0x00007ffff78ad44e in ?? () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#50 0x00007ffff78af185 in gtk_main_do_event () from /usr/lib/x86_64-linux-gnu/libgtk-3.so.0
#51 0x00007ffff74de5e2 in ?? () from /usr/lib/x86_64-linux-gnu/libgdk-3.so.0
#52 0x00007ffff62f0f05 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#53 0x00007ffff62f1248 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#54 0x00007ffff62f1304 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#55 0x00007ffff71d652c in g_application_run () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#56 0x000000000041cc84 in simple_scan_main (args=0x7fffffffdff8, args_length1=1) at simple-scan.c:2416
#57 0x00007ffff50b9ea5 in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6
#58 0x000000000040dcc9 in _start ()