12.8.3 Can you answer these questions?

12.8.3.1 Accent placement issues with STIX2 Math: \hat and \tilde too close on uppercase letters

https://tex.stackexchange.com/landing/r/digest?cta=question&id=759039

I am using the classicthesis style for the document layout and STIX2 Math as the math font, and I am encountering systematic issues with the placement of math accents, in particular \hat and \tilde. 
... 
[accents] [classicthesis] [math-fonts] [stix2]
 

asked by Dorian https://tex.stackexchange.com/landing/r/digest?cta=user&id=301264 Score of 3

12.8.3.2 Improving \widehat, \widetilde, \check etc. with lua code

https://tex.stackexchange.com/landing/r/digest?cta=question&id=759210

For certain (math) font configurations, the result generally look nice but occasionally may produce slightly unpleasant visual result. For example, for \widehat, \widetilde and \check: 
It would seem ... 
[math-mode] [luatex] [kerning] [luaotfload] [directlua]
 

asked by Jinwen https://tex.stackexchange.com/landing/r/digest?cta=user&id=194994 Score of 2

12.8.3.3 How to check if pdfmanagement tools are loaded are not in *a stable way*?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=759021

Of course, one can check \IfPackageLoadedTF{pdfmanagement-testphase}{true}{false}, but since the name has testphase, I assume that some day it will go. If I use this test in a package, some day it ... 
[documentmetadata] [pdfmanagement]
 

asked by Niranjan https://tex.stackexchange.com/landing/r/digest?cta=user&id=174620 Score of 1