Emacs 31.0.50 (2f1052d9b0de) will line-number in some buffers which shouldn't show it, is there some changed in recent master branch related to display-line-number

[Eval EXEC]

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Hello, I am building Emacs from source, and I’ve noticed something
unusual. Line numbers appear in my rg and xref buffers, but they
disappear after approximately 100ms. This happens even though I’ve only
configured display-line-number-mode to be enabled in prog-mode via an
add-hook.

Has there been any recent change in the code related to 
display-line-number-mode that might explain this behavior?

Thank you for your help!

Best regards,
Eval Exec