List of known issues for OSX 10.11 Developer Beta 1

The list of known issues for OSX 10.11 Developer Beta 1 is as follows, please do not test if you can't stand it.

Applications that need to write files to the system location will not work under 10.11. means that a large number of software that needs to be tuned and installed will need to be re-upgraded.
System upgrades from 10.7 or earlier are not recommended.
Unable to migrate from Windows.
AirPlay: May not connect properly with AppleTV.
Aperture: Unable to import raw files; workspace will disappear frequently (back from dock), partial Sony Raw cannot be displayed, some dialogs cannot be displayed causing the program to die (need to be forced and restarted); printing photos will cause the program to exit.
Bluetooth: Some devices may be lost when restarting or waking from hibernation, and you can only restart your computer again to try to recover.
Disk Utility: The Fix permissions feature is no longer valid (changed to System AutoComplete, this feature is removed), disk mirroring conversion, and RAID configuration are not supported.
User Switching: Using this feature will cause users to be logged out.
ICloud: If keychain is activated with a random security code in IOS9, it cannot be activated with the same security code in the current version 10.11, you need to activate keychain on another device, and you cannot create a new mail account.
IPhoto: Unable to send mail; Exiting edit mode causes the program to crash; the Location drop-down menu does not work; The newly imported photo does not recognize the face.
ITunes: The local contact and calendar cannot be synced, some ipods cannot connect, and devices using iOS9 cannot connect (installing XCODE7 beta resolves this issue).
The JAVA:JAVA6 program is no longer supported.
Logic Pro: often crashes.
E-mail: If upgrading from 10.6, it will not start, the initial start-up after the upgrade would take a long time, Gmail and Yahoo account after adding a few days will not be able to use the normal (restart the mail software can be resolved); Time machine cannot have the option to recover deleted messages ; Unable to send mail from icloud account (log out of icloud and log back in to resolve).
Numbers: Cannot print or Save as PDF, but can be exported to PDF.
Photos: Modified the file format, once the upgrade cannot be compatible with the old version Photos (that is, once opened with 10.11, you can no longer go back to 10.10); You must start a Photos to make the icloud Photo Library and other services work properly When an MPEG file is included in the library, the program may not respond when it is closed.
Preview: The picture may be damaged when it is turned.
Safari: Images and videos on some Web pages cannot be loaded, and the content masking tool with the wrong JSON configuration file will not be loaded.
USB:USB storage (including the built-in SD card) may not function properly after a sleep wake-up, requires a reboot or reseating to recover, and devices such as keyboard and mouse may fail after a few days of work, and USB 1.0/1.1/Some older 2.0 devices may not work properly.
Internationalization: Part of the translation is not completed, some language alignment is problematic.

List of known issues for OSX 10.11 Developer Beta 1