The Oracle APEX 20.1 release notes says:
"6.1.4 Support for Internet Explorer 11 Deprecated
Support for Internet Explorer (IE) 11 is deprecated.
Starting with release 20.2, only the current and prior major release of Microsoft Edge along with Google Chrome, Mozilla Firefox, Apple Safari will be supported."
Upgrading Internet Explorer 11 to Microsoft Edge sometimes may be difficult due to a company's IT policies - particularly due to existing legacy software that do not support beyond IE 11. For example, a company may give users new Windows 10 PC's but with IE 11 installed - even though Microsoft Edge comes with Windows 10. ..and regular users cannot install other browsers like Firefox and Chrome themselves. In this situation, it means that the Oracle APEX upgrade will end at the 20.1 release and users will lose the opportunity to see all the upcoming exiting features and components of Oracle APEX 20.2 or later.
I hope that the Oracle APEX team will reconsider to include some Modernizr scripts and CSS (for IE 11) in release 20.2 so that Oracle APEX version can run in IE 11 without any major issue. For Oracle APEX 20.1, all pages and components run correctly in IE 11 even though some look may be degraded. There is only a minor issue with the search item in faceted search. I wrote a custom CSS file so that the magnifier icon and Go button would appear correctly - they overlapped each other when running without my custom CSS in IE 11.
/* Media Query for Internet Explorer 11 */
@media all and (-ms-high-contrast: none), (-ms-high-contrast: active) {
.a-FS-filter span.apex-item-icon {
left: 0px;
}
.a-FS-search span.apex-item-icon {
left: 0px;
padding-left: 12px;
}
}
I really hope that Oracle APEX 20.2 will still work correctly in IE 11 without any major issue.
Thank you.