Hi Daniel.
It's pretty simple, for example I have this HTML in my main DSP:
Well in runtime the <header> is gone with no error that I could find. I had several projects working that I had to modify because of this.
About the patch I think we did an update from maybe 48 to 52 (We are now on the last patch).
By the way, I also found in another project where I'm using an Editbox trigger OnChange as an <input type="file" /> to upload files to the server that it stop working so I had to change it to an AttributesOnly to be able to detect the trigger (It was returning a DOMException on the uniface.js)
Thanks.