A serious bug in version 1.9 in original windows 10

all time in windows 10, if I login to server, whether it's multiplayers or single player, the minecraft gone and write this:

https://drive.google.com/file/d/0B8R9l0EUlf0QQ1BwNEhTYS1mU2M/view?usp=sharing

(the image attached)

so I can only join to minecraft 1.9 but not to any server so it's not worth...

I would be very happy if you correct it as soon as possible because 1.9 is cool and I want to play it already.