ARCHITECTURE Signal 56
Auto-grow textarea sizing works, but character count and progress bar remain unsupported under new 500-char limit
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Stagas reports the auto-grow field-sizing trick works for textareas, while the alternative method fails on prefilled fields and character-count or progress-bar features are not feasible with the 500-character maxlength.
A working auto-grow solution lets textarea height adapt to user input without manual resizing, improving the editing experience. However, developers cannot add live character counters or progress indicators because they are impossible under the current constraints, so UI feedback must rely on the hard 500-character limit. Accepting the limit reduces the need for additional UI elements but may affect applications that previously displayed character usage.
Written by elseif from the cluster below · every claim links back to a sourceThe three things worth knowing
The auto-grow field-sizing trick successfully expands textarea height based on its content.
The alternative trick breaks on prefilled textareas, affecting bio fields and edit/preview/draft modes.
Implementing character counters or progress bars is impossible; the hard 500-character maxlength is considered sufficient.
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