Why does this happen to the client every now & then?

I thought its a random error but since I am witnessing this for the 4th time in 10 days I am posting about it. Sometimes when I login to PBE the client doesn't load the hextech & Lunar revel shop as you can [see here](http://postimg.org/image/raf7rmq0r/). When that happens I can't accept any invite from friends. If I accept it will take me nowhere meaning the links are broken. If I start a dynamic queue it doesn't load. [Picture here](http://postimg.org/image/n1oqe27uj/) I will have to log off & login again for 3-6 times until I see the hextech tab & personal shop. Only after that I will be able to accept any game invites or start a queue. [Image here.](http://postimg.org/image/7hqzydtff/) Does anyone have an idea what might be causing this. Its not the first time it happened. After the patch it was kinda fixed but then reoccurred today. Besides, yesterday me & a friend observed that Gameplay tab for runes & masteries was also bugged & never loads. Is there a similar link to all of these problems? [Public chat and profile](http://postimg.org/image/nicy6gx3v/) doesnt load and now this is a permanent effect. Anyone knows a fix or is it something Riot has to resolve on the server?

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