It is not possible to add new tasks (or other instances) in board views. This is a practical feature which is missed in 16.1.1 and it was available in previous versions.
Do you plan to bring back this feature in a umcomping version?
Release : 16.1.1
Redesign of the Board views on 16.1.1
The change is documented on the Release Notes for 16.1.1:
Introducing New Board Layout in Clarity
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Some key points to remember are:
The board view does not provide the option to create new cards.
In the old board layout, users were allowed to configure the same attribute on the fields and metrics sections on the card. In the new board, you can only configure an attribute on either the metric or fields section but not both.
When the column and swimlane are set to the same attribute and you drag-n-drop the card to different values between the column and swimlane, then the column value will be used to set the card data.
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The board view does not provide the option to create new cards.