Right-click in the grey area of the tag panel and select "Adapt ..." in the menu or use File>Options>Tag-Panel.
There select the entry for Comment and click the Edit button.
In the drop-down list for "Size" select "multiline".
Right-click in the grey area of the tag panel and select "Adapt ..." in the menu or use File>Options>Tag-Panel.
There select the entry for Comment and click the Edit button.
In the drop-down list for "Size" select "multiline".