Page content selected improperly when running deskew or select content

[rnmerchant]

Apologies if this has been covered or addressed previously. Newbee user.
I've a simple PDF scan of a journal article; exported with acrobat to jpegs. They are a standard full page (~8x10") and very constant content with 3 columns of text and some images.
When I run some of the functions - say, deskew or select content - the content is selected properly on the first three of 8 pages then improperly on the remainder: sides cut off (either side) or on one page and odd selection of part of one column. I tried setting 'select content' to manual but this doesn't change the issue.

Screenshot is attached.

Richard

[majkaz]

What I am seeing is the result of incorrect "Split pages". Best way to avoid it is to set it manually for all pages (Manual + Apply cut).

You cannot simply pass over the first stages. Scantailor won't complain but will work differently than you expect. It will run these steps automatically and often quite wrong - especially if the text is in columns or if there are "column-like" pictures or tables.