There is no perfect percent for this value, but since translate.w.org increased this value I think we should restore it to the default value. Unless we have the resources and time to create a custom setting for this one and set it dynamically per user.
There are some experiments to convert translate.wordpress.org to full width
Translation table – current / full-width Translating a string – current / full-width (the design needs to be adjusted later for the right sidebar)
but currently GlotDict sets a fixed max-width to 85% so users using GlotDict will not see any changes.
See here source: https://github.com/Mte90/GlotDict/blob/master/css/style.css#L718
There is no perfect percent for this value, but since translate.w.org increased this value I think we should restore it to the default value. Unless we have the resources and time to create a custom setting for this one and set it dynamically per user.
What do you think?