@seagate : could you please test with the version from here : https://github.com/Kurtnoise-zeus/megui/releases ? If the problem is still there, then could you please provide a sample.
Maybe you can test the new version from here : https://github.com/Kurtnoise-zeus/megui/releases
Just uncheck "Restrict input filter to 8 bit" checkbox in the External Programs tab from Options.