> slowly / painfully delete every single line one by one before rewriting

I think this one is a visual artifact. I think it always rewrites artifacts from scratch internally, but the UI tries to make it look like it isn’t doing that. The result is that it looks like it’s deleting lines from the inside of the text instead of just writing them.

That said, I’ve also experienced all of your complaints, except the bad edit one (but I see that all the time in Claude Code/Aider).

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jasonjmcghee a day ago | parent [-]

For the bad edit one, to clarify, I mean, it would "put its edit pointer" at the top of the file and start deleting/inserting there, instead of where it "intended to" which would have been somewhere in the middle, for example.

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Erroring in that way specifically makes me think the "deleting every line" issue isn't just a visual artifact but ¯\_(ツ)_/¯

	▲	DANmode a day ago \| parent [-]
		Technical term for "its edit pointer" is "the cursor".