Description of problem:
Drag & drop copy of file between directories in the same instance of Thunar
Also happens between two instances of Thunar.

Looks similar to XFCE bug 11450

Version-Release number of selected component:
Thunar-1.6.4-1.fc20

Additional info:
reporter:       libreport-2.2.3
backtrace_rating: 4
cmdline:        Thunar
crash_function: matcher_matches_id
executable:     /usr/bin/thunar
kernel:         3.17.8-200.fc20.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 matcher_matches_id at gfileinfo.c:2530
 #1 _g_file_attribute_matcher_matches_id at gfileinfo.c:2549
 #3 get_access_rights at glocalfileinfo.c:859
 #4 _g_local_file_info_get at glocalfileinfo.c:1928
 #5 g_local_file_enumerator_next_file at glocalfileenumerator.c:405
 #6 g_file_enumerator_next_file at gfileenumerator.c:237
 #7 thunar_io_scan_directory at thunar-io-scan-directory.c:110
 #8 _thunar_io_jobs_ls at thunar-io-jobs.c:1192
 #9 thunar_simple_job_execute at thunar-simple-job.c:119
 #10 exo_job_scheduler_job_func at exo-job.c:317