Tabbar problem for some browsers

Hi,

I have this demo to show the structure of my tabbar. I’ve tried it on different browsers that I can access and they all show the page with no problem. But after putting it to production, I have got a lot of user feedback saying that they can not go to the second page and after. It could be OS and browser sensitive. Could anyone help me to figure it out where the problem is?

Here are some browser types that they have problem with:

Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36
Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.79 Safari/537.36 Edge/14.14393
Mozilla/5.0 (Windows NT 10.0; WOW64; rv:50.0) Gecko/20100101 Firefox/50.0
Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_2) AppleWebKit/602.3.12 (KHTML, like Gecko) Version/10.0.2 Safari/602.3.12

Thanks,
Grace
dhtmlx_test.zip (17 KB)

Or, it may not be the OS and browser sensitive, since I also see that there are a bunch of users with user agent (Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36) and they filled out the survey with no problem.

Please, try to add a valid html5 doctype on your pages:

I remove the header function from the demo, but I do have that on each page already on my site like this:

Oops, did some search and changed it to and moved the script down after dhtmlx scripts, but it did not fix the problem.

In your following code you have disabled all the tabs from the 2nd to 6th:
for (i=2; i<6; i++ ) {
if (tabbar.tabs(‘a’+i).isEnabled()) {
tabbar.tabs(‘a’+i).disable();
}
}
Please, try to fix or remove this your code.