problem with layout on setting posts Grid layout.

If set grid layout on 2 only on internet explorer 11 we can see as if it were set to 1 if I set the value to 3 I see only two columns. while it does not happen with crhome and edge.Easy blog has been added to the latest version and is installed on joomla version 3.8.3. we also tried with different joomla and easy blog templates.
Please can you give me help or a sweating? .
Thank you
Regards
Enzo