Cannot save general setting in option screen

Hi @shoheitanaka

Thanks for your nice plugin!

I found a bug for saving general setting in option screen.
The cause of the bug is in URL.

When I go to the option screen from left admin navigation (color in black),
the url is “wp-admin/admin.php?page=wc4jp-options” without “tab=setting”.
In this case, I CAN NOT save the setting.

If I go to another tab in the same screen and come back to general setting tab,
the url changes to “wp-admin/admin.php?page=wc4jp-options&tab=setting”.
In this case, I CAN save the setting.

I suppose that the bug is in includes/class-wc-admin-screen-4jp.php line 127
`
if(isset($_GET[‘tab’]) and $_GET[‘tab’] == ‘setting’){…}
`

Please fix this issue when u have time.

I use WP4.9.7 + WCforJapan1.2.21.

Thanks in advance!

Regards