A new line for the previous selected node is added

What causes this issue?

If you single-click one of the nodes of season workbench tree, and click
<ZK>Add New Line</> in sales or purchasing view, the selection changes
to the previous node and a new line is added for the previous selected
node.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Always double-click a node to select and display purchasing and sales
view details.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.