Popup displayed when hovering over an error marker can not be used to obtain focus and scroll through entire diagnostic text

[scottkurz]

When I hover over an error marker in a Java editor, I get a popup that says "Press 'F2' for focus", and when pressing F2 I get a resizable version of the popup dialog, such that I can read the whole text.

I've noticed, on the other hand, that when I get an XML error, e.g. in pom.xml, (using the m2e lemminx extension) and I hover over it I get a fixed-size dialog such that I can't read the complete error text. E.g., if I type an invalid element name to trigger an XSD validation error, I can't read the full set of allowed elements, for example.

I'd paste a screenshot but I don't know how to do a screen capture without causing the popup to disappear in the meantime.

I'm just guessing this is an lsp4e issue, though I realize it's possible it is rather (or also) an issue w/ Lemminx and/or WWD XML.

The problem here is easily worked around. I can click on the marker in the column to the right-hand-side of the editor window and get a popup I can click on and resize to read the whole text. Here is the workaround (you can see I just typed an invalid <a/> element in a pom.xml:

WORKAROUND SCREENSHOT

To reiterate, hovering over the marker on the right-column gives the good dialog. Hovering over the marker inline within the editor source (row 13 col 2 here) gives the bad popup.

ENVIRONMENT

Besides the latest 4.30 the issue seems to exist on a couple other random recent releases I tried

eclipse.buildId=4.30.0.20231201-1200
java.fullversion=17.0.3+7
JRE 17 Windows 11 amd64-64-Bit Compressed References 20220422_155 (JIT enabled, AOT enabled)
Framework arguments:  -product org.eclipse.epp.package.java.product
Command-line arguments:  -os win32 -ws win32 -arch x86_64 -product org.eclipse.epp.package.java.product

THOUGHTS

If you knew this workaround, this would be a real minor issue. But if it's an easy change to switch the popup dialog type that'd be a nice small improvement.