Just after downloading the new version I've found a bug. Here is the way to reproduce it:
1. Create a new thought in 18.104.22.168 version.
2. Attach an URL link to it, the thought icon will change to the link's favicon.
3. Now attach a new thought icon (using 'Capture...', for example).
4. Now close the brain and reopen it in 22.214.171.124 version.
5. You will see that the thought icon is reverted to link's favicon, though the new one is still stored in the thought's folder.
I've attached a simple example. Try opening (separatedly, not the same copy) example-7018.brainzip in both versions.