I think that the setting to display the text in yellow when the button is selected like up to 1.15 pre-1 is necessary for accessibility setting.
I didn't know how to send feedback, so I made a suggestion here.
MC-227350
<feedback> Highlight the text of the select button <accessibility settings>
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If its a bug, report it here.
If its feedback on what you think should be added, please report it at https://feedback.minecraft.net/hc/en-us