Hi Gugumelo, thanks for your input. I don’t think it may be a nutrient burn, normally It is manifested by burnt tips and leaf borders. It happens not just in some leaves. I don’t know if it could be a Boron deficiency:
and looks like it is strain related as it only happened to the Hibernates (and not all). The rest of the plants looks apparently fine. In your case it may be bugs related, I see what could be some eggs, the rest of the plant looks great, willing to see more pics … 