SketchUp may be setting the IE emulation to something pre-10. HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION
WORKAROUND
Use <optgroup> in a <select> element instead. It only requires HTML v4.01:
Good. But,… you cannot expect the average user to be able to change that, and … the setting is likely optimized for the current behavior of the internal webdialogs for Trimble EW and 3DW.
You might also be able to use a higher document compatibility mode with a <meta> tag in the <head> element.
Dan, of course, you’re right. As usual;-)
I added to html something like that: > <meta http-equiv='X-UA-Compatible' content='IE=EmulateIE10'>
and I changed registers to IE version 9999.
And everything works properly.
By the way do you remember what registration should be for Sketchup 15.2.685 65 bit?
I have the same problem but on Mac/Chrome. Datalist does not work. Setting the document compatibility mode seems to be a Windows thing and optgroup does not provide the filtering functionality I need. Any thoughts?
Before suggesting any thoughts, it would be helpful if you first tell whether you are using a UI::WebDialog or UI::HtmlDialog (SketchUp 2017+) and which SketchUp version…