One of the goals is to also gather things which have already been posted by community members. Always retaining the copyright they have posted, as for example:
Docs - ZigZag indicator for live trading
If you believe you have something to contribute, post it and it will be considered, just like anything else, but picked up things (initial idea) will be mostly related to indicators.
I do agree that the problem relies in that specific line in backtrader and it should be solved.
BTW for anyone wondering: my "full sample code" trick wasn't working anymore, so I scrapped it (and deleted the associated colab file). I'm not using backtrader anymore nor (back)trading in general. 🤷♂️