Thats definitely a form of "nute burn" if you will.
Its very typical after a tea or a calcium dosage.
If your tea is nutrient heavy and/or your soil is very nutrient dense, and you overfeed, as in suddenly move more nutrients thru the plant than it can process, the solids in its "blood" get driven into the tips and plaque up. The plaque dries and then starts to suck moisture from the plant cells, resulting in brown dried tips.
If you have great soil nutrition but calcium is low it will be really sluggish, so opening soil up with a calcium can immediately, as in that day, cause a rush of nutrients too.
That one usually shows as excess nitro tho, this looks more like a tea.
I get it too. You can't avoid it in small pots. Sooner or later you gotta feed them.
If you know that going in and feed constant watered down teas you can avoid it.
Slow and steady.
Keep light amounts of ewc going in up top.
Its the rush that does it.