• Version: v12.17.0-12.18.4
• Platform: all
• Subsystem: icu

What steps will reproduce the bug?

$ LANG=zh_CN.UTF-8 node -p 'new Date().toLocaleString()'
2020-9-28 3:33:35 ├F10: PM┤

How often does it reproduce? Is there a required condition?

Always.

What is the expected behavior?

node v12.16.3 (small-icu, English only)

$ LANG=zh_CN.UTF-8 node -p 'new Date().toLocaleString()'
2020-9-28 15:34:08

node v14.12.0 (full-icu)

$ LANG=zh_CN.UTF-8 node -p 'new Date().toLocaleString()'
2020/9/28 下午3:35:06

Both cases are correct.

What do you see instead?

Invalid and meaningless symbol characters "├F10: PM┤" in localized strings.

Additional information

Reverting #33337 (5c0232a, 2d76ae7) can fix the issue.