bjadams : I'm sorry, I tried to reproduce your bug, and everything was working. What build of Chrome are you using ? Canary ?
I have updated the first post with a new build. Can you check if you still have the bug ?
If it's still not working for your case, you can also extract the image with my "Extract as base64" plugin, save it in a var, do all you want to do with the effects, and reinject the saved string if you want to revert everything. It's not straightforward, but it works.
@all : I have updated the first post with a new build : new effects !
@Kyatric : is it possible to change the name of this plugin in the plugin list to reflect the new function (it's now doing Text & Effects, and not only Text as before). Thanks !