dwmblocks-async状态栏图标显示问题

[Delta303]

dwmblocks-async状态栏图标显示问题

如下图，我使用dwmblocks-async时遇到了配置的状态栏图标左侧有一个方框的问题。

dwm使用的字体是JetBriansMomo Nerd Fonts，我的dwmblocks的配置文件如下：

#ifndef CONFIG_H
#define CONFIG_H

// String used to delimit block outputs in the status.
#define DELIMITER "  "

// Maximum number of Unicode characters that a block can output.
#define MAX_BLOCK_OUTPUT_LENGTH 45

// Control whether blocks are clickable.
#define CLICKABLE_BLOCKS 1

// Control whether a leading delimiter should be prepended to the status.
#define LEADING_DELIMITER 0

// Control whether a trailing delimiter should be appended to the status.
#define TRAILING_DELIMITER 0

// Define blocks for the status feed as X(icon, cmd, interval, signal).
#define BLOCKS(X)             \
    X(" ", "date '+%H:%M:%S'", 1, 1)\
    X(" ", "wpctl get-volume @DEFAULT_AUDIO_SINK@ | cut -d' ' -f2", 0, 5) \
    X(" ", "acpi | grep -o '[0-9]*%'", 30, 3)\

#endif  // CONFIG_H

我自己做了一些尝试，比如：

把X(" ", "date '+%H:%M:%S'", 1, 1)替换为
X("", "date '+%H:%M:%S'", 1, 1)

结果是nerd fonts图标不见了，但是时间前面依旧显示了这个方框。
有点疑惑，求大佬指点