Created attachment 317990 [details]
backtrace of the crash

Hi! I've found a reproducible crash in Nautilus. Here are the steps to reproduce it:
1. Make sure you are in list view
2. Move to a directory with many files, preferably videos (it is my test case)
3. Before nautilus has finished loading all files, change to icon view quickly with Ctrl+2.
4. Nautilus should crash.

You can find the backtrace in the attachment and below:
https://gist.github.com/archdria/67d5a019f1f79cf8c379

I think it is related to the thumbnails component, as I haven't been able to reproduce it in a directory with plenty of directories.

It might be a duplicate of: 40316, 45237, 46324.

Thanks in advance!