Phal with tissue collapse. What is wrong?

[Roberta]

What were the conditions outside? Temperature? Amount of sunlight? Like, any chance that it got a bit toasted? Newer leaves may have been more tender - and shaded the older, lower ones.

[BrassavolaStars]

Originally Posted by Roberta

What were the conditions outside? Temperature? Amount of sunlight? Like, any chance that it got a bit toasted? Newer leaves may have been more tender - and shaded the older, lower ones.

It is definitely possible it could have gotten toasted. It was facing west outside above 85f as I remember. That said, it may have started developing this problem more so after I brought it into a cooler shadier area. I can’t remember so I’m just wondering what all the possibilities are.