Hi
ZC 1.5.5d, Responsive Classic template.

3 days ago I have noticed about a problem with the colorbox popup image on Chrome browser 58.0.3029.96 on mobile/tablet.
I have Image Handler 4 installed as well.
When it popups, it goes to the left and the "background" disppears. Sometimes the popup windows shrank.
The problem does not happen on chrome desktop.
Other operation systems I have checked (like Firefox etc') all is OK even on mobiles.
Do not understand what was changed. The site worked OK with these plugins before.
Maybe the SSL I configured lately.
When removed the "userway" javascript I have on the site, things got a little better but still a problem.
Tried MC code in includes/modules/pages/product_info/jscript_zen_colorbox.php without success.
Tried using JS 1.11.1 instead 1.12.0 and no better results regarding this issue.

Here is the link.
The weird thing is that a similar site link2 works fine and also uses "userway" js, colorbox, image handler4 but on ZC1.5.4.
When compared the files of colorbox / image handler, to see the difference, they look the same.