When right insertion is disabled, pasting tab-separated values only returns the first column

[C-Ezra-M]

As explained in the title.

Minimum code:

<active-table id="entry-table"
        data='[
            ["Contestant name", "Color", "Points before", "Points after"],
            ["", "", 0, 0]
        ]'
        columnDropdown='{
            "isDeleteAvailable": false,
            "isInsertLeftAvailable": false,
            "isInsertRightAvailable": false,
            "isMoveAvailable": false
        }'></active-table>

Data:

Gray	#808080	0	6
Tan	#cc9960	0	1
Brown	#804000	0	50

If you change isInsertRightAvailable to true, tab-separated values will paste properly.