Problem with right mouse button is very easy to solve yourself. Till last patch all settings could be done in command_mapping_config.xml. Now that file do not exist any more, but there is a new directory "command_mapping". Here in preset_keyboard_1.xml you can change everything you like.
1. Unpack directory "wows_unpacker" using wows_unpacker
2. Copy this directory do res_mods
3. change in preset_keyboard_1.xml KEY_RIGHTMOUSE to another value or leave it blank
<CMD_OBSERVE_CAMERA context="ship" type="hold">
4. change to KEY_RIGHTMOUSE
<CMD_ART_CAMERA context="battle" type="forceTap">
RMB for Artillery button bug is reported, use this workaround in the meantime