Ctrl+U doesn't work as expected in Hyper+bash.exe
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Description
OS: Windows 10 Pro 19041.685
Hyper: 3.0.2 release
When using bash.exe in Hyper, entering text and then using ctrl+u to cut back from the cursor doesn't work as expected; it leaves several characters from the front dangling which can't be interacted with.
Compared to Powershell.exe, cmd.exe, and Windows Terminal, all running bash.exe with ctrl+u support, this is pretty shocking.

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Research direction
Reproduce the Ctrl+U behavior in Hyper 3.0.2 on Windows 10 Pro 19041.685 with bash.exe, comparing it with the listed working terminals. Trace Hyper's terminal input and rendering path; done means Ctrl+U removes text back to the cursor without leaving dangling, unusable characters.
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Assessment
- Tech stack
- bash
- Domain
- cli
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100