Cave system generation broken, Caves Entrance been finished down because Cave system generation broken

Hi Mojang and Mega Spud! I am reporting this issue again because this issue is not been fixed yet. So, when the new mountains were been added and new world height was increased from upward the cave system generation was being broken and cave entrance was been finished down forever and new beta was release increasing the height from downwards of overworld but no open cave generation was added only height was increased from downwards this issue was still not resolved and the cave system generation was still broken and no cave entrance was appearing in overworld and now in the latest beta this issue is not still resolved and i have reported this issue again and i am reporting it again that cave system generation is broken and normal caves are being removed or bring finished and only aquifers appear in overworld so please kindly resolved this issue and again i am saying i do not have any type of video or screenshot of this issue because they were bring deleted mistakenly so please resolved this issue.
Thankyou!