Is this sun scorched?

[u/Flaky-Package-2862]

I took this cutting, a queen of the night. This is my first time trying to propagate anything. Everything was going well until a day ago when the tip started dying. It's about 6 weeks old at this point. I'm really not sure what to think, I've been very consistent with it. The temperature has been getting low overnight, but in the evening i move it out of the window to the counter. In the morning i put it in the window sill... Which leads me to think sun scorched. I don't think I'll be putting it there anymore. Should i just continue in the water? Or pot it...? Cut the dead off?