Text in navigation bar is in navigation bar
Text is vertical

Windows 10 Chrome
I cannot reproduce this on develop, Windows 10.0.17134.165, Chrome 67.0.3396.99

Cannot repro on develop, Windows 7 HomePremium 64bit SP1, Firefox 61.0.1
Cannot repro on Chromebook
So does Chinese, but it is OK for showing Chinese vertically. : )
@wufeng87 what operating system are you using? 鎮ㄥ湪鐢ㄤ粈涔堟搷浣滅郴缁燂紵
@BryceLTaylor Could you attempt a repro?

This happened when narrowing down the width of the browser window.
(I checked Chrome 67.0.3396.99 on macOS High Sierra 10.13.6)
And did not happen when setting white-space : nowrap; to the span tag.
<span style="
white-space: nowrap;
">銉曘偂銈ゃ儷</span>
@setoyama60jp Thanks for the repro! And thanks for the suggested solution, as well. Yeah, this seems similar to a ScratchWikiSkin issue I had a while back (which was fixed by this pull, which can provide some more detail).
I also managed to repro this myself just now:

As you can see, I had inspect element open - this caused the page's width to shrink, and the Chinese characters to stack on top of each other.
The full solution would be to add white-space: nowrap; to the style of div.menu-bar_menu-bar-item_oLDa-.
@Kenny2github Thank you.
https://github.com/LLK/scratch-gui/blob/9e31cd2e8abae88cf3b9bd50041b436e45d9ca64/src/components/menu-bar/menu-bar.css#L60-L70
So maybe we should add white-space: nowrap; to the class above.
I'll test and send PR later (a week or later.)
@chrisgarrity how do you feel about making this help-wanted?
This issue was fixed #2806 .
@Kenny2github win10. Sorry for not reply in time.