Need view attachment image in browser.

[shixinyu]

Mantis 1.2.17
Preview image is works.
Just wonder click the image or hyperlink will open a new tab to view rather than download it.

$g_inline_file_exts = 'gif,png,jpg,jpeg,bmp'; is not works.

Tried the patch:http://www.mantisbt.org/bugs/view.php?id=12313 and the view attachment will work but it will make [View issues] wrong.

Any suggestion?