Incorrect gap between facing pages with "Two-Up (Cover Page)" and "Default" magnification in right-to-left documents
Environment
Adobe Acrobat Pro
Continuous Release
Version: 2026.001.21789
64-bit
Steps to reproduce
Open a PDF document in Adobe Acrobat Pro.
Set the document to right-to-left (right-bound) page direction.
Open File > Properties > Initial View.
Set Page Layout to Two-Up (Cover Page).
Set Magnification to Default.
Save the PDF.
Close and reopen the PDF.
Expected result
For a right-to-left (right-bound) document, facing pages should be displayed next to each other normally in Two-Up (Cover Page) view, with the normal gutter between the left and right pages.
Actual result
When the document is right-to-left (right-bound), the left and right pages are displayed with an abnormally large gap between them.
This problem occurs specifically when Page Layout is set to "Two-Up (Cover Page)", Magnification is set to "Default", and the document uses right-to-left (right-bound) page direction.
If the magnification is changed from Default to another magnification setting, the facing pages are displayed correctly and the abnormal gap disappears.
The issue does not occur with left-to-right (left-bound) documents.
This issue is still reproducible in Adobe Acrobat Pro 2026.001.21789 (64-bit).
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