Post title is trimming automatically (Unexpected)

Hi, I have install a fresh WordPress. I am writing post in Bangla Language.
The problem is post titles are getting cut for unknown reasons. I want to keep the full title.
See the screenshot here: https://i.imgur.com/zWovuVN.png

Any idea how to solve it?

ANother similar site where I see the same problem:
https://landregistrationbd.com/category/%E0%A6%9C%E0%A6%AE%E0%A6%BF-%E0%A6%95%E0%A7%8D%E0%A6%B0%E0%A7%9F%E0%A7%87%E0%A6%B0-%E0%A6%AA%E0%A7%82%E0%A6%B0%E0%A7%8D%E0%A6%AC%E0%A7%87-%E0%A6%93-%E0%A6%AA%E0%A6%B0%E0%A7%87-%E0%A6%95%E0%A6%B0/