I just ran into a unique problem while doing a "Save As" when having multiple files open.
I'm doing several sizes of H5 banners of the same creative. For example, 728x90, 300x250, etc.
After approval of the layout and animation by the client, I have to go through and ready the assets for the pub.
Then I had this issue on one file and only affected a few of the images that had the same name, but not all of the images of the same name.
For example, each file has images named 1.png, 2.png, 3.png, and 4.png. (not the real names but just for an example.) Only 1.png and 3.png were affected. 2.png and 4.png were untouched.
So, in EA, I show six "index.html" files open. This way, when I have code to copy and paste, I can do it faster instead of doing each file one by one. I then "Publish", completing any HTML edits using Brackets.
The images in the library and Finder had swapped images from another open file's library upon "Save As".
Sorry for the longwinded version but I wanted to be thorough as possible.