I see no way to convert a task to an issue without going back to the old view.

[Kate Cooke]

I'm going to guess that they will eventually turn off the "see the old view" link and then how will we convert a task to an issue?  

[Warren]

Hi @Kate Cooke

I'm using Jira software, not Core, but I think that the issue view is very similar. I am able to click on the icon for the issuetype, which then allows me to change it's type - can you do that on Core?

In fact, if I hover over the icon, I get

[Kate Cooke]

I can do that, but it doesn't allow me to convert a task to an issue.   I saw another similar question and there is apparently a bug fix that they are working on albeit verrrrrrry slowly....