opacity is not supported in IE8

Webix JS
1

webix_debug.js@v2.2.5 line 12604, this._area.style.opacity = ‘0’;

2

I add this, and problem resolved!

this._area.style.filter = ‘progid:DXImageTransform.Microsoft.Alpha(opacity=0)’;

3

Thank you for sharing you solutions!

We will fix this issue in the next version.