Because of /imce page was not proceeded with default drupal_deliver_html_page() delivery callback, appropriate headers didn't added to page.
It causes broken encoding.
Quick patch in attachment (good solution is to create own delivery callback with proper headers, and use render API).

Files: 
CommentFileSizeAuthor
fix-missed-content-type-header.patch596 bytesIRuslan

Comments

Version:7.x-1.5» 7.x-1.x-dev
Status:Active» Fixed

Committed thanks.

Status:Fixed» Closed (fixed)

Automatically closed -- issue fixed for 2 weeks with no activity.

Issue summary:View changes

Corrected message