State executing:

Since I added information_schema to connection ...

Host/processes:

State executing: SELECT ID, USER, HOST, DB, COMMAND, TIME, STATE, LEFT(INFO, 51200) AS Info FROM information_schema.PROCESSLIST

This hangs on, does it executes constantly in loop ?

without information_schema, there is no such thing in proces list.

If you keep your finger on F5, then yes, that hangs on. But normally it only shows once when you go to the process list or refresh it.

No, go there and there it is, refresh does not remove it.

To emphasis: "Since I added information_schema to connection"(Otherwise I would not know it exists). Focus on other schema

win7,9.3.0.5044, 64 bit.

I suppose you can imagine I cant hold F5 & CTRL+PRINT SCREEN. All at the same time (-:

If focus at information_schema, it hangs there too. Mybe check there how it behaves at your side ...