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Galleria.module around line 200, function template_preprocess_galleria uses the safe part of the caption. This is not encoded correctly for use in an alt / title, in particular for the single and double quote characters (' and ").
Changing it to pull from 'value' instead fixed every problem that I know about, but there may be additional special cases.
Comments
Comment #1
Mark Theunissen CreditAttribution: Mark Theunissen commentedThanks for the bug report, this is fixed in -dev!
Cheers
Mark