Problem with Update elementor 2.5.3 (maybe previous one too)

Hi,

I can’t use “modify with elementor” panel since update. It asks to use debug mode.
It’s working great on Firefox but not on Chrome.

WP : 5.1
Elementor : 2.5.3
twentyseventeen 2.1 with child theme.
Chrome : Version 72.0.3626.119 (Build officiel) (64 bits)

I checked without plugins : same problem.

thanks for your help

regards
jerome