1845724 - Event display that remains blocked (calendar hidden but events still there)

Status: RESOLVED DUPLICATE of bug 1827100

(Calendar :: Calendar Frontend, defect)

Description

[adrien.rybarczyk]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/111.0.0.0 Safari/537.36

Steps to reproduce:

1. Create around twenty all day events
2. Quickly click several times on the show/hide calendar button

Actual results:

This problem also exists in 102

Events can remain displayed even if the calendar is hidden.

There are console errors:
Uncaught TypeError: current.parentNode is null
deleteEvent chrome://calendar/content/calendar-multiday-view.js:1526
NS_ERROR_XPC_JAVASCRIPT_ERROR_WITH_DETAILS: [JavaScript Error: "current.parentNode is null" {file: "chrome://calendar/content/calendar-multiday-view.js" line: 1526}]'[JavaScript Error: "current.parentNode is null" {file: "chrome://calendar/content/calendar-multiday-view.js" line: 1526}]' when calling method: [calIObserver::onPropertyChanged]

Expected results:

The only way to correct the display is to restart Thunderbird.

Comment 1

[adrien.rybarczyk]

The same thing can happen when the calendar is displayed.
With an error that causes the event never to be displayed:
Uncaught (in promise) TypeError: wrapper.firstChild is null
addEvent chrome://calendar/content/calendar-multiday-view.js:1497

Comment 2

[adrien.rybarczyk]

For deleteEvent:
simply add null check for current.parentNode
if(current.parentNode) {
current.parentNode.remove();
}

For addEvent:
simply add null check for wrapper.firstChild
wrapper => wrapper.firstChild && wrapper.firstChild.occurrence

Comment 3

[Magnus Melin [:mkmelin]]

Right, this is bug 1827100