Bootstrap input field inside tooltip popover removed from output html
It's even easier as you think:
Add
sanitize: false
as config option if you want to disable sanitize at all. If you just want to adapt the whitelist, you are right with your solution
https://github.com/twbs/bootstrap/blob/438e01b61c935409adca29cde3dbb66dd119eefd/js/src/tooltip.js#L472
I found the solution...
I my case add this to the javascript:
var myDefaultWhiteList = $.fn.tooltip.Constructor.Default.whiteList;
myDefaultWhiteList.input = [];
https://getbootstrap.com/docs/4.3/getting-started/javascript/#sanitizer