1597912 - calendar disappears if server returns HTTP Status 500 – Internal Server Error

Status: UNCONFIRMED

(Calendar :: Provider: ICS/WebDAV, defect)

Description

[M Lopez-Ibanez]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:70.0) Gecko/20100101 Firefox/70.0

Steps to reproduce:

I have setup a remote read-only ICS calendar. It has many many events already on it.

Actual results:

The server today started returning HTTP Status 500 – Internal Server Error. The calendar was switched off by Thunderbird and the events disappear. If I turn it on, I can see the (cached?) events but they quickly disappear and the calendar is switched off

Expected results:

Show a warning and/or some warning symbol next to the calendar indicating that there is an issue with the calendar but keep the calendar on and show the cached events. Right now there is no warning about events disappearing and no indication of why the calendar is off. Nothing is recorded in the activity log.