Open Bug 1474137 Opened 3 years ago Updated 8 months ago
Dynamic datalist doesn't fully update unless backspace pressed
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0 Build ID: 20180626184830 Firefox for Android Steps to reproduce: I've created a reproduce repository here: https://github.com/mitchhentges/firefox-dynamic-datalist-bug 1. Open `index.html` directly in a browser 2. Type in the beginning part of "summer" (e.g.: just type "sum") 3. Note that there's no results 4. Hit "backspace" once (input should contain the string "su") 5. There's results again Actual results: Firefox didn't show the actual matching datalist - it seems to be showing a subset of results Expected results: As I type in "summer", it should show "Summer [Noun]" in the results
Summary: dynamic datalist doesn't update unless backspace pressed → dynamic datalist doesn't fully update unless backspace pressed
I've uploaded the reproduce demo to http://datalist.fuzzlesoft.ca
I managed to reproduce this issue both by the uploaded link and by dragging the downloaded HTML in the browser on Firefox 61.0.1, 62.0b7 and Nightly 63.0a1 (2018-07-11), Ubuntu 16.04.
This isn't related to the @autocomplete attribute so removing the See Also.
See Also: 1340459 →
My previous messages were based on commit "1c64e6f686e3d489dac0228c48c05d0e7f9520c8" for the reproduce demo. To make locating the bug easier, I've simplified the demo in commit "eb3e0d6bbd44664bccbf1dd4110bd77e501b5f0b" to reproduce the issue without involving any network requests. The reproduce conditions for the demo are now a little bit different and more intuitive: 1. Open http://datalist.fuzzlesoft.ca directly in a browser 2. Type the letter `s` and wait for the datalist to update (should show five items) 3. Append the letter `u` (search should be `su` now). Note that only `su1` and `su2` appear in the dropdown, even though (by inspecting the DOM) it's clear that there should be five options 4. Complete the input character-by-character until it contains the word `summer`. Note that the autocomplete dropdown isn't shown at all. 5. Hit backspace once (input should contain `summe`). Note that there's now three results in the dropdown, even though there wasn't any before (even when you had the exact same text in the input).
Workaround: on the <input>, set autocomplete="off"
Component: DOM: Core & HTML → Form Manager
Priority: P3 → P2
Product: Core → Toolkit
Summary: dynamic datalist doesn't fully update unless backspace pressed → Dynamic datalist doesn't fully update unless backspace pressed
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