VS Code has some of the worst product quality I've seen from Microsoft in quite a while. It doesn't hold a candle to IntelliJ or Visual Studio. Even directly comparable "lightweight" editors like ISE are far superior.
Random examples of bad behaviour in commonly used parts that would affect just about every user:
If you try to search & replace, it'll refuse to remember "replace in selection". It'll reset every time, destroying your entire file instead of replacing just in the selected block.
If you do enable this feature, it'll change what you've selected, because... why?
Even with the feature enabled, the "search preview" will highlight matches outside the selection block! WTF?
There's no memory for recent searches, so if you've just spent ten minutes carefully crafting a regex and you accidentally click the wrong thing, then it is gone forever.
The recent files list isn't a list of recent files.
The console overwrites itself sometimes, resulting in gibberish output. It's particularly bad with PowerShell that uses Write-Progress. I've sat around for nearly an hour waiting for a process to complete, when in fact it was prompting me to continue. I couldn't see the prompt because it had overwritten it (incorrectly).
Someone thought that manually editing JSON files is a suitable GUI for configuring basic settings.
Ctrl scroll up/down doesn't change the zoom (or font size).
Unlike most Microsoft editors like the PowerShell ISE or Visual Studio, MS Word, and most third party text editors, block select isn't alt-drag but middle-button-drag instead. No middle button on your mouse? No block select for you!
It's unfortunate that many new Microsoft languages are supported in VS Code only. It feels like a huge step backwards that's being forced onto an enormous community.