Bug: Bulk adding tags in agenda does not respect radio groups

[Mark Kerr <mark@kerrsolutions.ca>]

[-- Attachment #1: Type: text/plain, Size: 683 bytes --]

I have a radio group of 3 tags defined in org-tag-alist: now. next, later.
This tag group works correctly when editing the tags directly in the
original org files or when the tags are edited individually in the agenda
using ':'.

When editing tags via the agenda's bulk editing command, however, adding a
tag from that radio group does not remove any pre-existing tags from that
group.

For example, say an item is already tagged "now", and the tag "next" is
added to it via bulk editing. The expected result is that the tag "next" is
added and the tag "now" is removed. Instead, the result is ":now:next:", as
the pre-existing tag is not removed.

I have version 9.2.3

- Mark Kerr

[-- Attachment #2: Type: text/html, Size: 874 bytes --]