I have more than once accidentally swiped left on a Mac, effectively hitting the back-button on a browser window holding a half-written Bitbucket snippet, and consequently losing everything.  The Save button takes time to naviagate to at the bottom of the page of a large snippet, and (annoyingly) clicking it also closes the snippet.  Obvious solution -  implement Cmd-S to save the current content without exiting! 

I raised this on the forum, and it was suggested to raise a Jira, so here you go  

Snippets are very, very useful but at the moment I've stopped using them because I can't trust myself not to lose the content when I move to other windows mid-edit and then either

(a) forget to come back and save the snippet, or

(b) accidentally navigate away without saving

A simple cmd-S would really help.  Writing this makes me think auto-save (drafts?) would be even nicer!

https://community.atlassian.com/t5/Bitbucket-questions/Is-there-a-keyboard-shortcut-for-saving-a-Snippet/qaq-p/1539854