Model Builder GP tools showing black box

HassanMahmoud_el07

Hello Everyone, 

I'm facing an issue with Model Builder. once I click on any of the tools, I see a black box. I need to double click to maximize the tool but I cannot resize the GP tool window box.

I tried uninstalling and installing again ArcGIS Pro and the issue is still shown.

MdlBuilder.png

wrongtype.png

John_Kannady_0-1723744595914.png

HassanMahmoud_el07

Updating to the new version 3.1.3 solved the problem.