UPSTREAM FIX

magento2-39669: Minicart update with a decimal qty: 0.7 is expected, 1 is in cart

Community fix magento2-39669 merged into magento/magento2 on 2025-04-25, released in 2.4.9; applies cleanly to 33 releases from 2.4.6 to 2.4.8-p5.

Fixes minicart update with a decimal qty: 0.7 is expected, 1 is in cart edited

Pull request title
Magento 2.4.7 update (mini)cart no decimal qty allowed
Pull request
magento/magento2#39669
Issues
#39236 human
Author
@quterorta
Merged
2025-04-25
Fixed in
2.4.9
Reported on
2.4.7-p2
Categories
Shopping Cart
Components
magento/framework, magento/module-checkout

Labels

Area
Cart & Checkout
Component
Checkout
Priority
P2
Severity
—
Reported on (labels)
2.4.7-p2

Issue

Title and steps come from the upstream issue and pull request.

Description

In cart is 1

Steps to reproduce

1. Add product with qty 0.5 to cart
2. Click on change (pencil) in minicart
3. Change qty to 0.7 and click update

Expected result

Expected that 0.7 is in cart

Actual result

In cart is 1

Taken from the upstream issue.

Code match per tag

Each tag was checked with git apply --check against that tag's files. A clean match means the change applies; it is not a test result. Tags that already contain the fix are marked.

LineCode match per tagTests
2.4.6
2.4.6 clean 2.4.6-p1 clean 2.4.6-p2 clean 2.4.6-p3 clean 2.4.6-p4 clean 2.4.6-p5 clean 2.4.6-p6 clean 2.4.6-p7 clean 2.4.6-p8 clean 2.4.6-p9 clean 2.4.6-p10 clean 2.4.6-p11 clean 2.4.6-p12 clean 2.4.6-p13 clean 2.4.6-p14 clean 2.4.6-p15 clean
2.4.6: no test data 2.4.6-p1: no test data 2.4.6-p2: no test data 2.4.6-p3: no test data 2.4.6-p4: no test data 2.4.6-p5: no test data 2.4.6-p6: no test data 2.4.6-p7: no test data 2.4.6-p8: no test data 2.4.6-p9: no test data 2.4.6-p10: no test data 2.4.6-p11: no test data 2.4.6-p12: no test data 2.4.6-p13: no test data 2.4.6-p14: no test data 2.4.6-p15: no test data
2.4.7
2.4.7 clean 2.4.7-p1 clean 2.4.7-p2 clean 2.4.7-p3 clean 2.4.7-p4 clean 2.4.7-p5 clean 2.4.7-p6 clean 2.4.7-p7 clean 2.4.7-p8 clean 2.4.7-p9 clean 2.4.7-p10 clean
2.4.7: no test data 2.4.7-p1: no test data 2.4.7-p2: no test data 2.4.7-p3: no test data 2.4.7-p4: no test data 2.4.7-p5: no test data 2.4.7-p6: no test data 2.4.7-p7: no test data 2.4.7-p8: no test data 2.4.7-p9: no test data 2.4.7-p10: fails before, passes afterunit: fails before, passes after
2.4.8
2.4.8 clean 2.4.8-p1 clean 2.4.8-p2 clean 2.4.8-p3 clean 2.4.8-p4 clean 2.4.8-p5 clean
2.4.8: no test data 2.4.8-p1: no test data 2.4.8-p2: no test data 2.4.8-p3: no test data 2.4.8-p4: no test data 2.4.8-p5: fails before, passes afterunit: fails before, passes after
2.4.9
2.4.9 conflictcontains the fix
2.4.9: no test data

Triage

Model @cf/cloudflare/clef. Probability this is a bug fix: 97.7%. Probability it is security relevant: 0.9%.

Show the model's answers and probabilities
QuestionAnswerProbabilitiesConfidence
Change kindbugfixbugfix 96.1%, refactor 1.5%, tests_only 1.0%, feature 0.6%, dependency 0.5%, docs_only 0.4%90.8%
Areacheckoutcheckout 74.7%, framework 18.6%, frontend 2.5%53.5%
Reported version2.4.7-p22.4.7-p2 61.6%, 2.4.7 5.2%, 2.4.7-p1 1.4%37.6%
Scope1.09 of 21 41.0%, 2 34.2%, 0 24.8%2.0%
Risk1.00 of 21 41.5%, 0 29.5%, 2 29.0%1.5%
Worth backporting1.53 of 22 61.5%, 1 30.4%, 0 8.1%21.5%

Download

For cweagans/composer-patches, choose a version below and download the bundle. Copy its magento2-39669/ folder into patches/composer/, merge composer.patches.json into composer.json, then run composer install. Test files are always removed; paths are relative to each package root, using the default -p1 level.

Packages (2): magento/module-checkout, magento/framework
Bundle README (what the ZIP ships)
# magento2-39669

Community fix merged upstream into magento/magento2, adapted by magento.watch.
This is not a patch published by Adobe.

Pull request: https://github.com/magento/magento2/pull/39669
Issue: https://github.com/magento/magento2/issues/39236
Author: @quterorta
Source commit: 715d107e081a2adbb7046f6e15282d571298658a
Modifications: test files and documentation removed, paths rewritten relative to each Composer package.
Licence: OSL-3.0 / AFL-3.0, as the original Magento Open Source code.
Maintainer: Łukasz Bajsarowicz (@lbajsarowicz)

Licence: Magento Open Source code under OSL-3.0 and AFL-3.0. The bundle carries the original author, source commit and the list of modifications.

Sources

Łukasz Bajsarowicz
Built by

Łukasz Bajsarowicz, e-commerce architect

Magento and Adobe Commerce architecture, upgrades, performance and audits for merchants and agencies since 2015; magento.watch is the tooling I use on those projects.

Open source, maintained on weekends.