Switch primary text frame's Text Frame Options for multiple pages
Switch primary text frame's Text Frame Options for multiple pages. See this item on forum: https://forums.adobe.com/message/11180092#11180092. Using 14.0.2 x64. You can't use applying a new Master Page to switch Balance Columns off and on on a Primary Text Frame, though you can use it to change number of columns. Thank you for your attention to this likely bug.
Jonas Madsen Rogne commented
On version 16.1 now.
This bug persists. It's not possible to toggle Balance Columns on the master page it seems. You have to go through and to it page by page.