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This is not supposed to happen and we will investigate.
Thank you for looking into this. I appreciate it and eagerly await your response.
I ran into the same problem; After hooking up a gate switch to output 1, inputs 3 and 4 started toggling. I solved this by connecting 10k pull up resistors between inputs 3 and 4 and 5v.
(Hooking a pull up only to input 3 causes input 4 to begin to toggle as well…)
Thank you! I am not so up on my electronics? What do those 10K pull up resistors do? And if I want to use them again, can I or are they useless now?