when opening right side bar with terminal, browser, and file reader ram by cursor increases up to 8gb and crashes. when try to open file from chat same error occurs. error occurs only in 3.4.20 version (3.2.16 works well) and after i close cursor the cursor icon on desktop crashes and doesnt open app anymore
Hey, this is a known class of bugs. On Windows, the renderer process hits the ~4 GB V8 heap limit and crashes with code -536870904. A few root causes are already being tracked internally, but there’s no ETA for a fix yet.
Don’t keep terminal + browser + file reader open in the sidebar at the same time. That combo is what spikes memory in your case.
Periodically close or clear the terminal if it has a lot of output.
If it’s too disruptive, stay on 3.2.16 since it’s stable for you.
About the app not launching from the icon after a crash. That can happen if the OOM corrupts state.vscdb. Try closing all Cursor processes in Task Manager and relaunching. If that doesn’t help, you can temporarily rename %APPDATA%\Cursor\User\workspaceStorage. This will reset workspace state, but your settings and chats will remain.
Let me know if it still crashes after these workarounds and we’ll collect logs.
