[Bug] Simplified Chinese ERR_GEN_ZLIB_1 persists (#421) and Chinese IME cannot be used in NUI

[Tuise233]

Summary

This is an updated follow-up to my unresolved report #421, together with a separate NUI input-method problem affecting Chinese-language use of FiveM for GTAV Enhanced. My current server is on b156-ea; the original crash report was filed on b119.

A. Simplified Chinese game language: ERR_GEN_ZLIB_1 / streaming failure. The issue described in #421 remains unresolved for me. In my original tests, using Simplified Chinese caused resource-loading crashes and streaming problems; switching the game to English avoided those symptoms.

B. Chinese IME cannot be used inside NUI. Both Microsoft Pinyin and third-party Chinese input methods fail in my current setup. I cannot switch to them while typing in NUI, and no candidate window appears. Direct typing is limited to English. I currently have to compose Chinese text in an external application and copy/paste it into NUI.

These are two distinct symptoms. I am documenting both here because they prevent normal Chinese-language use; I have not established that they share a root cause.

Issue type

Client

Repro rate

Always

Server build version

b156-ea (current server); original crash report: FXServer-early-access b119 win32

OS

No response

CPU

No response

GPU

No response

RAM

No response

Storage type

None

Connection type

None

ISP and bandwidth

No response

DxDiag

No response

Network graph

No response

Platform

None

OS version / distribution

No response

CPU

No response

RAM

No response

Using txAdmin?

None

Hosting provider

None

Machine type

None

/perf endpoint output

No response

DDoS protection

No response

ulimit -n value (Linux only)

No response

Docker Compose file (Docker only)

No response

Steps to Reproduce

A. Language-dependent crash (original reproduction from #421)

1. Set GTAV Enhanced's game language to Simplified Chinese and launch FiveM for GTAV Enhanced.
2. Join the affected server with custom maps enabled. The original tests used multiple Alchemist-converted maps and a community gen9 conversion of bob74_ipl.
3. During server-resource loading, observe the ERR_GEN_ZLIB_1 error and client crash.
4. For the language comparison, switch the game to English, relaunch, and join the same server. This avoided the problem in my original tests.

B. NUI input-method failure (current observation)

1. Join a server and open an NUI text field.
2. Focus the field and try to switch from English to Microsoft Pinyin using the Windows input-language switcher.
3. Try to compose Chinese text: the input method does not switch and no candidate window appears.
4. Repeat with a third-party Chinese input method; the same problem occurs.
5. Type the desired Chinese text in an external application, copy it, then paste it into the NUI field. Pasting works and is my current workaround.

The game-language setting in A and the Windows input-method selection in B are separate settings; a shared cause has not been confirmed.

Expected Behavior

A. Selecting Simplified Chinese should allow the client to load server resources and stream the world normally, without ERR_GEN_ZLIB_1 crashes or persistent low-detail map rendering.

B. A focused NUI text field should support the Windows input method selected by the player, including Microsoft Pinyin and third-party Chinese IMEs. Switching input methods, displaying candidates, composing text, and committing the selected characters should work without using an external application.

Actual Behavior

A. The Simplified Chinese crash from #421 is still unresolved. The original report also recorded low-LOD/world-streaming problems or ERR_GEN_ZLIB_1 during fast noclip or long-distance teleportation even without custom maps. English was the workaround in that report.

B. I cannot activate Microsoft Pinyin or the third-party Chinese IMEs I tried in NUI; no candidate window appears. I can enter English directly, but Chinese text currently has to be written elsewhere and pasted into the NUI field. This describes the input methods I have tested, not a test of every non-English language.

Evidence

• Original report #421, including the existing screenshots and environment.
• Original crash report code: 5e3748c7-e46b-4387-998b-e4fe0c38a0c6 (historical, from [Bug] An ERR_GEN_ZLIB_1 error occurs when connecting to the server to load server resources with the game language set to Simplified Chinese #421).
• My original Simplified Chinese versus English comparison.
• My original streaming/teleportation observations.

The IME behavior above is my current observation. No new recording, fresh crash dump, or standalone reproduction resource is attached to this follow-up.

Additional Context

Existing Legacy fix referenced by a maintainer

In Gogsi's reply on #421, they noted that Simplified Chinese had also caused problems in FiveM Legacy and linked the existing fix: citizenfx/fivem@ecc907cec08220bc559b23b3bb5acacd5395e1d6. They suggested that FiveM for GTAV Enhanced might need a similar fix. Could the team check whether the relevant fix or equivalent handling is present and effective in Enhanced? I am citing this as an investigation lead, not a confirmed fix for Enhanced.

Related IME report

Discussion #248 — Keyboard input language is forced to ENG while FiveM is focused reports a similar problem with Korean Microsoft IME. My report adds the current Microsoft Pinyin/third-party Chinese IME symptoms and the external-copy/paste workaround. A maintainer there asked whether it also happens in single-player; that comparison has not been established here, so I am not attributing the cause to FiveM or the Rockstar Games Launcher.

Prior troubleshooting and environment

The original #421 tests included game-file verification, reinstalling the Rockstar Games Launcher, and trying multiple maps, without resolving the crash. Another user also reported custom-model-related crashes and a language-switch workaround in that thread.

Historical client environment from #421: Windows 10 Pro 22H2; Ryzen 7 9800X3D; RTX 4080 16 GB; 32 GB DDR5; NVMe SSD; Ethernet. These are the original report's details, not a freshly collected system report. The exact current client build, IME versions, and third-party IME names are not recorded in this follow-up. The original server pool-size configuration remains available in #421.

Please retain the links to #421 and #248 when triaging. A status update on the unresolved language-dependent crash and guidance on the NUI IME limitation would help affected players.

[Tuise233]

Update on the Chinese IME issue (part B): I can now type Chinese text directly in NUI. However, some issues remain: the IME candidate window is still not visible within the game window, even though text input now works.

Thank you to the team for the quick response and the improvements so far! I hope the remaining candidate-window display issue can be addressed as well.

[Nobelium-cfx]

Thanks for the report! We identified the issue with the crash and IME hint display (they are indeed unrelated). Both fixes will be pushed in the next patch.

[Gogsi]

Hello,
A fix for this issue has been implemented in November 11 patch for FiveM for GTAV Enhanced. Please try again and let us know if the issue persists. Thanks for your help!