OpenVPN - interface

Hello. After last upgrade of luci, luci-app-openvpn strange behavior is detected. My config file stops to work:

config openvpn 'mysection'
        option enabled '1'
        option config '/etc/openvpn/mysection.ovpn'

It tries to find file 'openvpn-mysection.conf'.
Please, leave the option 'config' to specify additional file.

Reboot should fix the issue.

It doesn't fix, I've already tried, of course.

ubus call system board
opkg list-installed openvpn\*
ls -l -a /etc/openvpn
        "kernel": "4.9.184",
        "hostname": "OpenWrt",
        "system": "Qualcomm Atheros QCA9533 ver 2 rev 0",
        "model": "TP-Link TL-WR842N\/ND v3",
        "board_name": "tl-wr842n-v3",
        "release": {
                "distribution": "OpenWrt",
                "version": "18.06.4",
                "revision": "r7808-ef686b7292",
                "target": "ar71xx\/generic",
                "description": "OpenWrt 18.06.4 r7808-ef686b7292"
openvpn-openssl - 2.4.5-4.2

Last directory contains OpenVPN-configuration files.

Anything like *.conf?

Initially *.ovpn file, but I had to rename it according to my first message.