Hello, it's me again with the same issue I mentioned a year ago.
When playing animations in the preview window, it starts playing the sequences in the main window too - and because of that, it automatically puts keyframes when you try to move something while the animation playing at preview window.
Honestly, I realized that the issue wasn't actually solved since last time. It looks like it was fixed at first glance, but when I tried using sequences instead of swapping images in a slot a month later - it was still broken. Aaand I was just too busy to write about it again, so I left it, thinking someone else would report it... but seems like not many people use the preview window + sequences? 🤔
Or maybe everyone's just okay with this bug? Or, like me, they're waiting for someone else to report it first? xD
This time I will write about this until it fully fixed! x3
Here is examples what happening at timeline:


Not sure if uploading here will work, so also will upload to giphy:


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