Mattermost web crashes when removing the "I’ve deleted the reminder" post

[YuKitAs]

Reproduce:

1. Create a new reminder task
2. In the reply "I will remind ***", click the Delete button below
3. In the reply "I’ve deleted the reminder ***", click the x button at the right corner (in order to remove the post)
4. Mattermost will jump to a blank page (/messages/@remindbot)

Expected:
The post will be removed normally.

Mattermost version: 5.12.1 (Webversion on Chrome and Firefox)

[scottleedavis]

verified on 5.12.1. Discussion with mattermost team possible causes.

[scottleedavis]

Still no resolution, however I am tempted to create a simple plugin to replicate the issue to then present again to the team. The mattermost-plugin-demo does not have this issue and also uses ephemeral posts.

[YuKitAs]

Hi, thanks for following up! My mattermost was upgraded to v5.13.1 but the issue still exists.
When I looked at the response for the blank page, the logs showed

{"level":"ERROR","message":"msg: Uncaught TypeError: Cannot read property 'id' of undefined row: 1 col: 402495 stack: TypeError: Cannot read property 'id' of undefined url: https://mattermost.gameforge.com/static/main.b9238839ce0ad2b12267.js"}"

[scottleedavis]

@YuKitAs turns out it was a bug in the code. Fixed in v0.4.3
https://github.com/scottleedavis/mattermost-plugin-remind/releases/tag/0.4.3