Beaver Builder Plugin Pro 2.8.1.2

Fix equal height columns not working properly on the small breakpoint (#2707)
Fix PHP warning in the Post Module (#2704)
Fix upload filters being ignored in the new iFrame UI (#2702)
Fix negative top margin on row not working when aspect ratio is not set (#2714)
Sanitize site URL in slideshow module to prevent a line break in the URL from breaking the JS

Fix some PHP warnings related to debug mode (#2686)
When duplicating a layout, the WP Admin will no longer be loaded in the BB iFrame (#2684)
Fix a backwards compatibility issue with node visibility in some situations (#2682)
Fix PHP warnings on import when using PHP 8.1 or higher (#2678)
Slideshow Module: Fix a null photo object throwing PHP warnings into the layout JS (#2690)
Fix duplicating a module scrolling you up in the UI (#2692)
If node is visible on all breakpoints, don't render visibility classes (#2697)

Fix issues when equal height columns is used: margins are retained, background height is correct and vertical alignment now works properly
Fix pinned panel not being able to be resized
Fix color picker going behind the browser bar