Displaying Track Length in the Tag Panel

Is is possible to format the number that displays in Tag Panel? Currently there there is no pattern and the numbers don't match those listed in Length.

Have a look at the extended tag-view (ALT-t) of a file and best give us a screenshot.

The "length-field" has the paceholder %_length% and you cannot add this to the tag-panel, because the tag-panel is reserved for editable tags. %_length% shows the technical info of the file, not a tag-field.

If you have another field called %length% it is a user-defined field.

Please use the search function in this forum (upper right corner).
You will find many answers already given to the same questions like yours:

Not in the tag panel.
But if you select just a single file then you see the length in the status bar.
(If you selected several files, then you would not see any data in the field for length anyway but <keep>)

And in addtion to

please follow these hints:

Thanks, this helped return the values displayed on List. Most important was telling me that fields on the Tag Panel are only used for editable fields.