In Thunar, clicking 'Insert emoji' in the right-click context menu on the search box doesn't display an emoji dialog and causes Thunar to lock up.
Steps to reproduce:
1) Ctrl-F or start typing to bring up search box.
2) Right-click in the box and select "Insert emoji"
Insert emoji dialog to appear
Thunar is unable to be closed, type to search doesn't work, and no emoji dialog appears.
Clicking on a file icon allows you to search and close Thunar again.
Fedora 30 (Xfce spin)
I can reproduce, with Icons and Compact List views the search input just disappears, but with Detailed view Thunar is unresponsive, no error message, the CPU is at 0~1%.
Wow, didn't know that there was a "Inserrt emoji" menu.
I can reproduce the problem, with a complete lock of thunar.
Sean Davis referenced this bugreport in commit f7222bbd9f5f5724f6461300e197e9b2520013cf
Disable emoji menu in type-ahead search (bug #15451)
The above commit disables the "Insert emoji" menu in the type-ahead search.