bug when editing fields

i use the following relevant plugins:
Advanced Custom Fields (4.4.1)
Advanced Custom Fields: qTranslate (1.7.6)
qTranslate-X (3.2.9)

i have a custom post type called films with custom fields for two languages english and german. the custom fields are using the qTranslate field type.

i have a problem when editing one language of a field and then updating it. for instance i have the field Titel. initially for english it contains AlmaEN (http://i.imgur.com/UzlSB8U.png) and for german it contains AlmaDE (see: http://i.imgur.com/bk5joTi.png). if i edit the english version to AlmaEN2 and hit update, a strange thing happens: the german-version of the field gets appended the old value of the english field, i.e., AlmaEN. the english version updates as expected. see this screenshot for the resulting values of both fields. the deutsch/german version contains the strange value: http://i.imgur.com/bVCgquN.png

edit: the bug appears to only happen for simple “text” field types. i tried with a WYSIWYG field type and the bug did not appear.

i dont know much about the internals of these plugins, so i have no idea why/where this happens.

i would love to have this fixed, because it makes editing the multilanguage custom fields really tedious…

please note that i also made this change: https://wordpress.org/support/topic/language-switcher-for-custom-fields?replies=3

thanks!

https://wordpress.org/plugins/acf-qtranslate/