Although this is an old topic I share the same experience as OP. You'd think that after three years of development most bugs have been caught but as OP said, with each new version new bugs are probably introduced.

My experience in short:

- After changing settings in the GUI, the bot sometimes freezes, the only way to get it up and running again is by restoring the original config file (I didn't edit the config file manually) so this should not have happened, even once, still it happened twice in two days, forcing me to re-enter all my settings, including the API keys, strategy settings, and trading pairs. Very annoying.

- Random errors, literally random errors without a message attached to them, I checked my internet connection multiple times to see if it had anything to do with it but my internet appeared stable, I have Fiber internet for what its worth.

- Buying conditions met but it doesn't buy at all. Additionally: I entered additional settings like RSI < 30, still, it bought twice when the RSI was 37 and once when ti was 42. The same applies to sell, I had the setting at RSI > 60 before selling, it sold when RSI was at 49 instead.

I think I could live with the random errors as it didn't seem to affect the performance of the bot, however, changing settings, the bot freezing and losing all settings is very annoying. Once the bot froze for no reason while I slept, and during that time it missed a sell order. We're talking about money here so these things shouldn't happen.

As for the freezing after a settings change, the solution: don't change your settings or keep a backup before you change something. I could do that to work around it of course.

But the biggest problem for me is the bot buying when it isn't supposed to buy (paying too much), and selling when it isn't supposed to sell (selling too cheap). Sure you can add additional settings like only sell at x% profit but I leave that field empty on purpose, for the simple reason that when you use a Bollinger band strategy and prices drop instead, you might want to get out at break-even to reduce your losses to a minimum, while if you set that you want at least 0.5% profit your losses might turn out much larger, heavily affecting your overall ROI.

I had high hopes for Gunbot but unfortunately, it's too unstable and requires too much babysitting. If I wanted to watch charts all day I could just as well be trading myself.