- Back Office:
  - Bug fix:
    - #23694: Fix exception when adding only a space in the payment method in the orders page (by @atomiix)
    - #22677: Fix errors when viewing an order in BackOffice when the language of the order no longer exists (by @atomiix)
    - #23601: Take customization into account when updating an Order's product quantity (by @atomiix)
    - #23584: Fix error when opening a cart rule containing a gift product that is not enabled in that store context (by @atomiix)
    - #23142: Prevent setting duplicate order status names (by @Progi1984)
    - #23040: Fix missing DNI Number in BackOffice Order View (by @Progi1984)
    - #22920: [BC Break] Prevent adding out of stock products in Create order page (by @Progi1984)
    - #22791: Add error message when the payment method is invalid in Back Office's Orders page (by @Progi1984)
- Front Office:
  - Bug fix:
    - #23688: Fix display of color section on the add to cart modal on FO (by @NeOMakinG)
    - #23388: Fix products not centered on home and search pages with classic theme (by @NeOMakinG)
- Core:
  - Improvement:
    - #23343: Make autoloader suffix reproducible (by @atomiix)
  - Bug fix:
    - #GHSA-fhhq-4x46-qx77: Fix possible XSS injection through DataColumn Grid class (by @atomiix)
- Tests:
  - Refactoring:
    - #23693: Add test 'Send message from contact us page with customer logged in' (by @boubkerbribri)
    - #23674: Change functions and add more comments on install page  (by @boubkerbribri)
    - #23679: Add test 'Check mailto link on contact us page' (by @boubkerbribri)
    - #23627: Add test 'Search product and check autocomplete list on FO' (by @nesrineabdmouleh)
    - #23624: Fix wait after choosing combination (by @boubkerbribri)
    - #23614: Add test 'Quick edit and bulk actions shop URLs' (by @nesrineabdmouleh)
    - #23542: Add test 'Check product details in product page FO' (by @nesrineabdmouleh)
    - #23585: Fix nightly 09/03/2021 (by @nesrineabdmouleh)
    - #23554: Click on logo link on checkout page to go to home page (by @boubkerbribri)
    - #23503: Add test 'Check links in header page FO' (by @nesrineabdmouleh)
    - #23519: Fix local sort for shop url on multistore (by @boubkerbribri)
    - #23464: Add test  'Filter, sort and pagination shop urls' (by @nesrineabdmouleh)
    - #23471: Backport test 'Check footer links' (by @nesrineabdmouleh)
    - #23452: Add test 'Check product block in order page BO' (by @nesrineabdmouleh)
    - #23410: Fix nightly 25/02/2021 (by @nesrineabdmouleh)
    - #23382: Fix nightly - Add reset Step in 'Default Pack Stock Management' (by @nesrineabdmouleh)
    - #23359: Fix nightly - Delete duplicates on selectors names (by @boubkerbribri)
    - #23238: Add test - Quick view product on FO (by @nesrineabdmouleh)