Japanese characters improperly outlined at end of line; goes into new line too soon (without hard Enter)

[A Publisher]

If you use Japanese in some word processor, what you usually get is that at the end of a line the period comes nicely and directly after the character, as if the period sticks out a little to the right, and it all fits well. Also, kanji are not broken off too soon (by going into a new line too soon (without Entering)).

But what I've gotten in Affinity Publisher is exactly that: (1) the last character and the period sometimes are cut off and put on a new line, creating a gap at the end of line before the new line, and (2) if there's no period, sometimes the last character gets newlined even though there's no need for it, again creating un ugly gap. In the end, this makes it look pretty ugly, and causes extra work and fiddling that, by the way, has lead me nowhere so far.

For example, I tried expanding the text frame's right vertical line to the right for a little more room, but this does not help.

If illustration is necessary, here is a quick and dirty one, where the period in the correct example should be pretty much the end of the line:

(correct)
それを知った．
(incorrect)
それを知っ
た．

In the following example, the second character of 言葉 should be the last character on the line:
(correct)
多くの漢字があり、多くの言葉
がある．
(incorrect)
多くの漢字があり、多くの言
葉がある．

How will this be solved?

Edited June 11 by A Publisher
extra example

[stokerg]

Hi @A Publisherand Welcome to the Forums,

We are aware of a number of issues when typing with Kanji and have them logged with the Dev team for correction.  I've updated the report with a link back to this thread so we can update you when they have been resolved  

[A Publisher]

Thank you, @stokerg, for your welcoming message, and for your reply. 

Is there any idea on when it is solved?

[A Publisher]

@stokerg, is there no estimate at all? Knowing this would help me make some decisions.