It sometimes triggers zoom out icon when you unfocus from text editing. I can reproduce it in these steps.
Change keyboard layout to Chinese.
Insert a text layer and type some Chinese character by pinyin input method. The pinyin should include
Press ESC to quit editing.
The cursor becomes zoom out icon and the canvas will zoom out when clicking.
5 Click Z to change to select mode (V not working)
For more details you can see this video.