WIP: Slider with Custom Mobile First Breakpoints Does Not Apply 'Items to Show' Setting At Correct Breakpoint

Browser: Chrome Version 127.0.6533.89 (Official Build) (64-bit)
OS: Windows
URL: https://stg-buffer-dev.kinsta.cloud/
Video: Jam

The issue is that the slider component settings do not seem to play well with mobile first custom breakpoints. It will apply the items to show setting to the NEXT breakpoint instead of the current one.

Reproduction Steps
Enable custom breakpoints and reverse the breakpoint order to be ā€œmobile firstā€ so the Mobile Portrait breakpoint is the base breakpoint. Then add a slider to any page and attempt to modify the Content > Settings > Items to show value.

For example, if you set the slider to show 2 items at the Mobile Portrait breakpoint, then the Mobile Landscape breakpoint will show 2.

If you set it to show 4 the Mobile Landscape breakpoint then the Tablet Portrait breakpoint will show 4.

Setting the Desktop breakpoint sets the mobile so it goes in a loop and you can use this as a workaround.

System Information

Theme Information
Theme name: Buffer Festival - Bricks Child Theme
Theme version: 1.1
Theme author: Bricks
Theme author URI: https://bricksbuilder.io/
Theme is child theme:
Parent theme name: Bricks
Parent theme version: 1.9.9
Parent theme URI: https://bricksbuilder.io/
Parent theme author URI: https://bricksbuilder.io/

WordPress Environment
Home URL: https://stg-buffer-dev.kinsta.cloud
REST API Prefix: wp-json
WP version: 6.6.1
WP debug:
WP language: en_US
WP multisite:
WP memory limit: 256 MB

Server Environment
Server info: nginx/1.25.5
MySQL version: 10.11.8
PHP version: 8.1.29
PHP post max size: 128M
PHP execution time limit: 300
PHP max input vars: 10000
PHP safe mode:
PHP memory limit: 256M
PHP max upload file size: 128M

Hi Minolta,
Thanks so much for your report, and welcome to the forum!

I reproduced the issue and added it to our bug tracker.

Best regards,
timmse

Replying to add that this bug is present in the carousel element as well (timmse is already aware due to my comment on this thread: NO BUG: Carousel Items to show Not Working - #9 by EricE)