While my Raindrop page was open I went to Tools in the menu and chose compatibility mode and the plugin opened to bookmark the page I wanted as expected. It seems to work whether you have the plugin from either store - my preference is the Firefox simply because it is in the blue colour like Raindrop and the Chrome one is a white cloud.
Edit - it worked about twice then reverted to the previous behaviour.
Although it is saying planned I checked back and it is now working as expected, so some other change must have resolved this.
Steps to reproduce:
<Include steps to reproduce the bug; Did you try using Compatibility mode? If applicable, does Safari behave in the same way?>
Install the extension which happens as expected.
Expected behavior:
<What you expected to happen?>
When you visit a website with a login feature the D appears in the right of the box as you expect. However, clicking it does nothing. When you visit the Dashlane icon in the top bar it opens but just hangs without loading the content as displayed In the enclosed image.
Orion, OS version; hardware type:
0.99 115
Image/Video:
<Copy/paste or drag and drop to upload images or videos (up to 20MB)> 
