Good calendar, and a FTP problem Rated 5 out of 5 stars

Thank you for the important Calendar add-on for the nice Thunderbird, or TB in short.

There's one little problem when Lightning uses ICS calendar files on a FTP server (like ftp://server.com/Kalender.ics) _and_ events with reminding alarms:

When Lightning first opens such an ICS file, it asks for the FTP user-name and password and stores these two words in TB's keyring (if you ticked the store option). So next time when Lightning synchronises its calendars or when you start TB, Lightning opens the ICS file from the FTP server with the stored user-name and password from TB's keyring.

So far, so good. But, when an event in such a FTP calendar uses a reminding alarm, the reminder window pops up asking when to repeat the reminder, and then asks for the FTP user-name and password _again_. In the next TB+Lightning session this asking will happen again, and so on.
Looks like Lightning ignores these two stored words in the case of reminding events. Is this a bug?

(Some people suggested to use the ftp://username:password@server...etc syntax, which works but is not nice for non-private environments when you've to double-click the calendar name which shows the entire URL including passwords in clear-text.)

This review is for a previous version of the add-on (2.6.3).  This user has a previous review of this add-on.

Could you check bugzilla.mozilla.org product calendar if there is a bug report open for it? If it does not exist feel free to create one. When you do so, please give us as much information as possible, i.e what ftp server you use, if known what settings apply, ...

Re P.S. This exact comment? I am not sure. If you previously posted a different support request, possibly with a low star rating, it may be that it was removed by the addons team.

For others reading this, it may not be apparent, I cannot remove reviews myself. Their removal needs to be approved by the addons team.