Highlights

• Fixed: Removed the :not(:root) selector from our svg Reboot styles, resolving an issue that caused all inline SVGs ignore vertical-align styles via single class due to higher specificity.
• Fixed: Moved the browserslist config from our package.json to a separate file to avoid unintended inherited browser settings across npm projects.
• Fixed: Buttons in custom file inputs are once again clickable when focused.
• Improved: Bootstrap's plugins can now be imported separately in any contexts because they are now UMD ready.
• Improved: .form-controls now have a fixed height to compensate for differences in computed height across different types. This also fixes some IE alignment issues.
• Improved: Added Noto Color Emoji to our system font stack for better rendering in Linux OSes.

CSS

• Fix custom-forms heights and position #25602: Base min-height and position of custom checkboxes and radios on $font-size-base instead of a generic 1rem.
• Allow background images for active buttons #25740: Remove background-image: none reset on active buttons since the mixin covers this, should gradients be enabled.
• #25842 Remove max-width from table class #25864: Removed max-width: 100% from .tables to prevent background stoppage on scroll.
• Fix custom range thumb style #26385: Improve the custom range input's thumb styling across various browsers.
• Fix modal overflow style nesting (#26742) #26743: Improve how we nest modal styles to prevent issues when prefixing.
• Form control heights #26820: Add fixed height to <input>s with .form-control.
• Custom file validated border #26880: When :invalid or :valid, match the inner border on custom file inputs with parent border.
• Update validation tooltips to use tooltip vars #26887: Update source Sass for validation tooltips to use tooltip components base variables. v4.2 will see us create new variables for these—see Add new variables for form validation tooltips #26886 for tracking.
• Add Noto Color Emoji to font stack #26889: Add Noto Color Emoji to our system font stack to improve emoji rendering on Linux OSes.
• Fix custom file input z-index #26916: Bump the z-index on our custom file input to account for the z-index change on focus of the input.
• Remove :not(:root) selector from reboot for svg  #26927: Removed the :not(:root) selector from our svg Reboot styles.
• fix .modal-dialog-centered on IE10/11 #26273: Fix .modal-dialog-centered on IE10/11.

JS

• feat(plugins): allow to import separate plugins #26767: allow to import separate plugins for bundlers

Docs

• Update tooltip docs to explain potential overflow boundary issue #26844: Update tooltip docs to explain potential overflow boundary issue and recommend solution.
• Clarify custom select styles #26888: Clarify how we style our .custom-selects and the style limitations of <option>s.
• Improve responsive table docs #26890: Improve responsive table docs with separate, clearer examples and a note about broken displays given breakpoints.

Examples

• Replace .box-shadow in examples with built-in .shadow utility #26493: Replaced all custom .box-shadow instances in our examples with built-in .shadow utilities added in v4.1.
• Remove .border-bottom & .border-top classes from examples #26810: Removed all custom .border-bottom and .border-top classes from our examples as we added them as a feature in v4.1.
• Update cursor on floating labels example #26826: Update the cursor on the <label> to match the ` on our floating labels example.

Build

• Move the browserslist config to a separate file. #26896: Move the browserslist config to a separate file.
• fix(tests): visual plugins tests #26946: Fixed asset paths for visual JS tests HTML files.