XML Syntax Error Indication on a Wrong Line

Tested Browsers / Devices

Windows 10

• FAIL:
  • Chrome 63.0.3239.84
  • Edge 41.16299.15.0
  • IE 11
  • Firefox 57.0.1
• OK: n/a

URL Minimal Example

https://ace.c9.io/build/kitchen-sink.html?doc=XML

Steps to Reproduce the Problem

1. Open an XML document to edit
2. Optional: If it's not already the case, separate a single-lined XML tag into multiple LOC
3. Add a syntax error intentionally e.g. a character right after an attribute value: "..."s.

What Is the Expected Result?

The error / warning indication is on the same line as where the error actually placed.

What Happens Instead?

Any other information?

Even with an XML tag which has all the attributes in a single line, the indication is placed somewhere else which is weird. I had a case where I made such a syntax error and didn't know where it was until I had to scroll down.