Could be any number of things or just the weather.
3 oz is a lot of FO for 35 oz of oils. General convention is 1 oz PPO. I couldn't find Bamboo Mint in BB FO Calculator...older FO? I did find Bamboo and it accelerates. The calculator for Baby's Breath says 1.75 oz for a 'strong' scent. And if you check the Reviews...last month someone posted that their batter went from emulsion to medium trace.
My Rule of Thumb is to make a test batch (1 lb) of any new scent regardless of what the supplier or reviews say because every recipe is different. The two times I didn't...I got pudding. I have two 4" Square Molds that I use for this purpose...I need to get a 6" Slab Mold too.
If you have had previous success soaping at 90F, then it's most likely the FO and not the temperature. There is also that it could be reacting to an ingredient. I have a FO that I cannot use with my Regular Soap recipe, but I can with my Goat Milk Soap. The two differences between the soaps, outside of the liquid, is Cocoa Butter; I don't think the FO likes it. And it just happens to be one of the two I didn't test before a bought a 16 oz bottle of it, but once it's gone, I won't be buying it again.
One of the things you have to realize about the majority of soapers on YT is that they are making large batches...3lbs or more. While they may only be showing a 10" or 2lb mold ON camera, they often have a second mold off to the side. And don't stress that you didn't notice...I did the same thing. I made a LOT of pudding until someone turned the light on upstairs. Now days, I rarely use my stick blender when it comes to small batches or if I am making GMS and that's because I don't add colorants. Unless I am making a single color soap with Micas, I disperse all my colorants so I can use a whisk.
In addition to soap making I knit. One of the recommendations is that when you have lost your mojo or are frustrated with large or complex project...knit something simple and small...like dish or wash cloth or a simple hat or cowl. So make some plain soap. No scent, no colorants...just you and your recipe enjoying each other's company...playing around. For all the colorants and scents and fancy swirls...there is just
something about a basic bar of soap...I have one sitting on my desk right now. And I have a bar of what my daughter calls my 'grandma' soap. Pastel Pink, Rose scent, made from a cavity mold with roses on it. It's perfection.