How to add a watcher to Jira Task?

[SERGEI OGARKOV]

I have a new view of the Task and try to add additional watcher to it. Unfortunately I have no such option in interface.

[Mirek]

Do you have Mange Watchers List permission?

https://confluence.atlassian.com/adminjiracloud/managing-project-permissions-776636362.html

[Kian Stack Mumo Systems]

Sergi, 

Try clicking on the icon I've provided in my screenshot. It looks like a little eye. You should be able to add new watchers if you click that (And have the manager watchers permission).

[SERGEI OGARKOV]

Hi Kian,

Unfortunatelly no, I can add myself but I can not add another user (I'm Jira app admin).

It seems my issue is related to this ticket: https://jira.atlassian.com/browse/JRACLOUD-69751?_ga=2.19259064.1490541703.1548260381-227522329.1548260381