Logger: can't bring up filtering options for popup entries where URL does not start with http[s]

[gorhill]

Originally spotted here.

Describe the issue

In the logger, the filtering options for popup entries where URL does not start with http/https can't be brought up.

One or more specific URLs where the issue occurs

http://codepen.io/PaulBGD/pen/zZRLqR

Steps for anyone to reproduce the issue

1. Open logger.
2. Open http://codepen.io/PaulBGD/pen/zZRLqR in a new tab.
3. Click "Run" button.
4. The entry data:text/html;base64,SGVsbG8gV29ybGQ= will appear in the logger, blocked by the filter |data:text$popup.
5. Click the cell -- for that entry.
6. Result: nothing happens. Expected result: the filtering options should appear.

Your settings

All default settings.

[mapx-]

another case here:
https://forums.lanik.us/viewtopic.php?p=116512#p116512

popup about:blank cannot be managed