Looks better now, but somehow the RC-6 protocol is disabled now.
Code
LibreELEC:~ # ir-keytable
Found /sys/class/rc/rc1/ (/dev/input/event13) with:
Name: TBS 5520 USB2.0
Driver: dvb_usb_tbs5520, table: rc-tbs-nec
lirc device: /dev/lirc1
Supported protocols: nec
Enabled protocols: nec
bus: 3, vendor/product: 734c:5520, version: 0x0001
Repeat delay = 500 ms, repeat period = 125 ms
Found /sys/class/rc/rc0/ (/dev/input/event4) with:
Name: Nuvoton w836x7hg Infrared Remote Transceiver
Driver: nuvoton-cir, table: rc-rc6-mce
lirc device: /dev/lirc0
Supported protocols: other lirc rc-5 rc-5-sz jvc sony nec sanyo mce_kbd rc-6 sharp xmp
Enabled protocols: lirc
bus: 25, vendor/product: 1050:00c3, version: 0x0033
Repeat delay = 500 ms, repeat period = 125 ms
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If I stop kodi and eventlircd, start ir-keytable with "ir-keytable -p rc-6 -t" and start eventlircd and kodi again it works. But after a reboot rc6 is turned off again.
But as long as RC6 is enabled, the remote works as it should.
€dit: Ah forget about it, I'm stupid... I created a lircd.conf but I realized that I don't need it anymore. Without the lircd.conf it works fine