Signal disconnection after hiding SSID

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What steps will reproduce the problem?

Canon Wireless printers(MG6320, MX927, MX922) was connected ASUS rt-n65u with 
custom firmware 3.0.3.7-080 via 2.4GHZ signal.

After hiding SSID, printers always disconnected with the router.
The printer could not catch the signal afterwards though I input the same SSID 
name again manually.
This issue doesn't happen when using ASUS original firmware.
:: Custom firmware 3.0.3.7-080. win7, win8.

As Dr.Sydorenko.O. said,  I tried to change region code options to USA.
But it doesn't work at all.

I tried to change all the other options.
It's 2.4Ghz (not 5.0Ghz!)

USA I can catch the signal, though I can't connect it.
Europe  I can't see the signal.
Japan   I can't see the signal, either.
Debug   I can see the signal and can connect it. -> But after hiding SSID -> 
disconnected.

I think it's something linked with unstable Wireless connection of custom 
firmware. 'casue all the connection is intact when I use original firmware of 
RT-N65U.

Thank you.

Original issue reported on code.google.com by allergyf...@gmail.com on 10 Apr 2014 at 5:27