How is the software compatibility after Nexus 5 upgrades Android L?

My friends and I personally tested 5.0 of different devices, mainly because the domestic software did not actively update the compatibility with 5.0. The application of 5.0 is bound with lib, so many software signature conflicts can't be installed at the same time, such as Taobao and Alipay, some software can't be opened at all, such as 12306, and some software functions are damaged, such as root operation of lbe and SMS recovery of Baidu cloud backup.