ACF PRO: acf filed labels are displayed RAW instead of localized (values are ok)

[skvskv]

There's '[:en]' , '[:es]' and '[:]' everywhere in labels and descriptions of ACF fields when I edit a post with ones. Although the values of those fields are OK.

I can't recall my website having the issue until I upgraded to ACF PRO.

WP: 4.9.6
ACF PRO: 5.6.10
ACF qTranslate: 1.7.23