[FS#719] make menuconfig display problem

[LEDE Bugs]

The following task has a new comment added:

FS#719 - make menuconfig display problem
User who did this - Yousong Zhou (yousong)

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Diff the output of **env** and **bash -c 'env'** may reveal something interesting.
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More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=719#comment2460