Hi , Were having a similar issue, our company builds a web safari extension for enterprise. before iOS 26 (beta) release we would archive our extension and install to our devices no problem. since iOS 26 (beta) (we also tried in beta 4 23A5297m) the extension would archive perfectly but when installing the extension would just not run. its found in settings under safari extension, but when enabled the extension and open safari it will show error message "Ext" is no longer available. to rule out all code issues, we built a new project from scratch with a new bundle id, tried to archive with no problem, but when installed in an iphone 16 with iOS 26 BETA (23A5297m) same error ocurs it installs but when opening safari it will give an error message saying extension is no longer available. attached in the google drive link is a zip file of the new project, a zip file with a succesfull build of the ipa file with enterprise distribute, a video of the entire proccess and the error that the iphone gives. also attached a log file from the iphone that includes the install and the crash of the app. https://drive.google.com/file/d/1PYDOv8IRvRY_ouqiOc0sJdcfh0CHbL72/view?usp=sharing within the logs there is a log saying Error occurred during transaction: The provided identifier "dev.sacal.ext" is invalid. before ios 26 the exact steps worked perfectly. Also if we run it through xcode or build a debugging app it works perfectly @DTS Engineer can you help us identify if this is same bug? and if its being fixed?

Hi Thanks, we have a feedback open but we would like to know if its a bug or its something on our side, weve uploaded the sysdiagnose to the feedback https://feedbackassistant.apple.com/feedback/20199448 , and the sysdiagnose is alsi visible here https://drive.google.com/file/d/1G_mxnHdgudbBShI45idI5nB5kfcB_ouV/view?usp=sharing