Block title not being translated.

Update CTools to latest -dev.

This issue is still an active issue for Blocks placed in Mini Panels. Same description as originally posted. The block alone is translated when placed in a region but the Mini Panel containing the same block shows the untranslated title.

Ctools: 7.x-1.3+4-dev
Panels: 7.x-3.3
i18n: 7.x-1.10

This bug comes back

Chaos tool suite (ctools) 7.x-1.3
Panels 7.x-3.3
Internationalization 7.x-1.10

With fresh install, I have tested

1. title translation doesn't work
Chaos tool suite (ctools) 7.x-1.2, 7.x-1.3
Panels 7.x-3.3
Internationalization 7.x-1.8, 7.x-1.10

2. title translation works!
Chaos tool suite (ctools) 7.x-1.3
Panels 7.x-3.3
Internationalization 7.x-1.7

Therefore, this bug is introduced in 1.8

thanks, skyredwang, for testing the different versions and spelling it out like that.
I'm finding the very same behaviour..

I have same behaviour with blocks and views blocks (I don't have Panels installed). So this might not be related with Panels.
I tried :
Ctools: 7.x-1.2, 7.x-1.3, 7.x-1.3+4-dev
Internationalization 7.x-1.7, 7.x-1.8, 7.x-1.10

Still the same :-(
Have a look maybe at this related post : https://drupal.org/node/1975768

A fix on this? I'm having the same problem as #6.
Blocks are translated if placed in panels, but they are not if placed in mini panels (then in Panels).

Odd. I'm having this issue, but I'm not using Panels at all. Drupal 7.43, Internationalization 7.x-1.13.

Block title override is set through Configuration > Blocks > Edit Block, but that override is never added to the string table. Unless I'm looking at a different bug with similar symptoms, this seems like it could be a bug in Core. Sadly, I'm not familiar enough with Core or the block module to figure out where t() should be called and isn't.

Edit: modules/block/block.module:939

        if ($block->title) {
          // Check plain here to allow module generated titles to keep any
          // markup.
          $block->subject = $block->title == '<none>' ? '' : check_plain($block->title);
        }
        if (!isset($block->subject)) {
          $block->subject = '';
        }

I think this is where it would be set, but I'm not entirely sure what else it could affect further out. $block->subject is already translated at this point, so it seems reasonable to encapsulate the check_plain() call in t() thusly:
modules/block/block.module:942
$block->subject = $block->title == '<none>' ? '' : t(check_plain($block->title));

This works in my limited scenario, but I'm being told that blocks can set title as well. Would that occur before or after this code in block.module? Is there a particular language title supposed to be?

Maybe try setting the i18n_string_translate_langcode_XX variable.

see http://www.drupalcontrib.org/api/drupal/contributions%21i18n%21i18n_stri...