LuCI OpenVPN server setings quickly disappear

Hi guys, I'm having a problem configuring OpenVPN using luci as some settings are hidden when going over to advanced configuration then to VPN section. Settings are displayed for a sec and then goes hidden. Apparently this bug is already fixed in luci but it's not included in lede. Is there a way to do it manually?

Can't you SSH into the device and edit the config files manually?

Of course, I can. I can also configure whole router from ssh, but this doesn't resolve Luci's problem displaying the page due to a problem that is already solved. I would like to see if there is a way to manually fix luci before it's included in some future builds.

According to the bug report, the fix is here:

If I am not mistaken, only a text file has been changed, so I guess you could edit that file in your router.

Ok, understood. So, for all the others, what I did was:

  1. downloaded fixed file from here: openvpn-advanced.lua
  2. renamed old file located here: /usr/lib/lua/luci/model/cbi
  3. pasted downloaded file from step 1 (be careful about extension .lua)

First test looks ok.