fix firefox regression (#1860)
fix firefox regression (#1860)


DevExpress/testcafe-hammerhead,miherlosev/testcafe-hammerhead,LavrovArtem/testcafe-hammerhead,miherlosev/testcafe-hammerhead,DevExpress/testcafe-hammerhead,LavrovArtem/testcafe-hammerhead,DevExpress/testcafe-hammerhead,LavrovArtem/testcafe-hammerhead,LavrovArtem/testcafe-hammerhead,DevExpress/testcafe-hammerhead,miherlosev/testcafe-hammerhead,miherlosev/testcafe-hammerhead