Command syntax help doesn't clamp to the right chat line border

To reproduce, type a long command so that a new argument starts near the end of the chat line, such as:

/execute at @a[scores={test=1,test=1,test=1,test=1,test=1,test=1,test=1,}] run say

Add a space and observe the command syntax help box appear almost entirely hidden. See attached screenshots.

Note that tab completions do clamp.