Cannot embed multimedia attached to another page

Multimedia macro does not allow embedding files that are attached to another page. The dialog says:

Steps to reproduce

1. Create a page, attach a video file of your choice
2. Create another page and try to insert a multimedia macro
3. The previously attached file from the other page is not displayed

Workaround
Start typing ! and the first characters of the name of the file and you can embed the video this way.