reversing or fixing content mirrored in many pages in Affinity Publisher doc

[Beverley in Victoria]

HI I have  accidental mirrored content on the left side pages in 2 my page spreads  of about70 pages (n so far  of 300 page book). . I may have read that that was a bug in V2 that happened after inserting one page. 

Can some one please please tell me how to revert these ages back the layout that I created. 

I read something about " return or stick to spine", but am not sure where to find this command.

Thank you in advance

 

[MikeTO]

This can happen when you add, move, or delete a single page.

First, add a single page before this page to correct it. Then deselect Page Move Options > Anchor Toward Spine in the Pages panel's menu. Then delete the single page you added. This option will remain off for this document so you will never have the issue again with it, but note that it's on by default for all documents.

Cheers