Weird output of Chinese characters

[suc1997]

Versions

ConEmu build: 180528 / 180617 x64
OS version: Windows 7 / 10 x64
Used shell version: cmd

Problem description

Hi developer, I used ver. 170910 for a long time. Last month I update to 180528 and found something weird in display Chinese characters. Just now I checked ver. 180617 and it happend again, so I submit this issue here.
I'm not sure whether this bug exists in previous version like ver. 180503.

Steps to reproduce

1. Simply compile these codes and run the executable file in ConEmu:

#include <stdio.h>

int main(void)
{
    printf("漢字漢字漢字");    /* 漢字 means Chinese character */
    getchar();                /* <--- source of bug? */
    return 0;
}

2. The bug appears! It's quite difficult to describe in text, so I attached a screenshot at the end.
3. If I delete the 'source of bug?' getchar();, the bug won't appear.

Additional files

screenshots

[Maximus5]

Do you mean inversed colors of the first glyph?

[suc1997]

Yes, and some unexpected underlines as well.
The exact style of the bug is difficult to predict, but I found that using a loop may produce a neat output:

#include <stdio.h>

int main(void)
{
    for (;;)
    {
        printf("漢字漢字漢字");    /* 漢字 means Chinese character */
        getchar();                /* <--- source of bug? */
    }
    return 0;
}

Here's a screenshot.
new screenshot