no change log for this version on link
https://oxygenbuilder.com/oxygen-6-0-beta-4-is-now-available/
New: Setting to "force" non block theme behavior
Improvement: ACF integration significant performance boost
Fix: Catch-All Template without an Inner Content Element prevent "Edit With Oxygen" option on Pages
Fix: Regression in 4.9.1 where Edit Only Button is too large
Fix: WordPress 6.8 causes the error: Notice: Function _load_textdomain_just_in_time was called incorrectly
Fix: PHP function utf8_encode() is deprecated
Fix: Deprecated: Creation of dynamic property $custom_dynamic_datas
full change log for this verison on link
https://oxygenbuilder.com/oxygen-6-0-beta-3-is-now-available/
Fix – Added missing translation function alterantives for esc_attr_e() and esc_html_e()
New: Copy & paste conditions.
Fix: Corrected issue with template assignment accordions in WordPress 6.7
Fix: Advanced Queries broken if a post type isn't set.
Fix: OR Meta Query no longer working.
Fix: Background Position control no longer works in the builder preview.
Fix: If an element contains custom CSS and is converted to a Reusable Part, the code becomes base64 encoded.
Fix: Eye icon in Structure Panel for hiding elements is broken.
Fix: Box shadow is no longer visible in the builder.
Fix: Oxygen edit button is missing in the Block Editor for users with edit-only access.
Fix: "This design contains elements registered by another plugin that is no longer active." - improvements.
Fix: Superbox default image no longer loads.
Fix: Oxygen's CSS caused issues with metaboxes in Block Editor admin area.
Tweak: Filter added for additional security when dealing with dynamic data - find more information at https://oxygenbuilder.com/documentation/other/security/#filtering-dynamic-data (#5263 #5258)
Tweak: Added TikTok and X icons to FontAwesome. Visit Oxygen > Settings > SVG Sets once to refresh the icon list (#5256)
Tweak: Reduced the amount of version check calls made to Oxygen's servers when checking for software updates (#5251)
Fix: Corrected an issue preventing CSS changes from previewing properly after switching from post to template using the Navigator (#5253)