I have also ran into the bug on Precise 12.04 LTS, which is really a shame for an LTS release.
However, I have found a work around that resets the side pane for an afflicted PDF file.
If you can not longer make the size pane smaller:
[1] Close the offending PDF if it is currently opened in evince [2] At the command line:
$ gvfs-set-attribute afflicted_file.pdf "metadata::evince::sidebar_size" 100
[3] Reopen PDF and enjoy.
Hopefully this helps somebody a bit until a solution can be reached with regards to hscrollpolicy that finds its way into the official repo.
I have also ran into the bug on Precise 12.04 LTS, which is really a shame for an LTS release.
However, I have found a work around that resets the side pane for an afflicted PDF file.
If you can not longer make the size pane smaller:
[1] Close the offending PDF if it is currently opened in evince
[2] At the command line:
$ gvfs-set-attribute afflicted_file.pdf "metadata: :evince: :sidebar_ size" 100
[3] Reopen PDF and enjoy.
Hopefully this helps somebody a bit until a solution can be reached with regards to hscrollpolicy that finds its way into the official repo.