Codex CLI in an Eclipse IDE terminal doesn't allow backward scrolling (also with --no-alt-screen option)

[stefano-1973]

Codex CLI in an Eclipse IDE terminal window doesn't allow backward scrolling. Also, running Codex with the --no-alt-screen option doesn't change anything.
I know the Eclipse terminal is scrollable and Codex CLI running in Windows cmd or powershell is scrollable.
So there must be some problem between Codex CLI and Eclipse terminal.

Steps to reproduce

• Open a terminal in eclipse IDE
• Start Codex CLI with or without --no-alt-screen (even setting "set TERM=dumb" before calling codex doesn't help)
• Give Codex the following prompt : write 50 rows (a enter b enter c etc...)
• Try scrolling backward and see if it appears

Tested under this environment:

• Windows Server 2019
• Eclipse IDE/Platform version Version: 2026-03 (4.39.0) Build id: 20260305-0817
• Codex Cli version 135

[stefano-1973]

Because the cause is Codex Cli only when used with Eclipse terminal (and vice-versa), I open also this: openai/codex#25412

[merks]

I would have extremely low expectations with respect to someone else doing something to fix whatever problem there might be here. Whomever wants this to work will most likely need to invest the effort needed to do whatever is necessary to make it work themselves.

[vogella]

@stefano-1973 What does Codex CLI say about a fix in this repo?

[vogella]

eclipse-platform/eclipse.platform.swt#3350

[merks]

eclipse-platform/eclipse.platform.swt#3350

I guess you meant to link tab reordering to a different issue.