fci-mode breaks popup-el

[Eilie]

For some reason flycheck compilation error popup can't be displayed over text so it chooses to add each line of compilation error popup at the end of existing line:

Disabling fci-mode fixes issue, would be great to make fci-mode work properly with popup-el tho.

[eigengrau]

Dupe of #21.

[alpaker]

Just FYI, I'm abandoning this package and welcoming requests to be take over as maintainer.

[alpaker]

The functionality provided by this package has now been implemented natively in Emacs as display-fill-column-indicator-mode, available as of version 27.0.90. Unless you are forced to use an older Emacs, you should use the native implementation instead of fci-mode. The former is unaffected by most of the compatibility issues that this add-on has.