That is interesting to know... I wonder why the patch antenna resolves the issue. Perhaps it blocks the harmonics somehow?
I am still going with the adapters, because I am using a Helaxial58 antenna and SPW58 skew planar from circular wireless. I want to use both of those for diversity.
I hope they work, and we all want to hear your thoughts. It will be a good thing to know just in case. And I'm not too well-versed in antenna technology, but I have been reading/watching. Not sure why the patch helps either, maybe someone else can chime in. I know that there's a great YouTube video about antenna technology that I've seen, and it helps to explain it. I can't find the link,but it's been posted here a bunch of times in the past few weeks.