forms - Fixed width for buttons or proportional with the text

What is the best practice for a UI, to make all the similar buttons with a fixed-width, no matter how long is the text (with the condition to fit) or make the width proportional with the text and a

forms - Android Material Design: Should text field and button have same size? - User Experience Stack Exchange

forms - Fixed width for buttons or proportional with the text? - User Experience Stack Exchange

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