I used Sogou Pinyin IME for many years. It is easy to use.
Save your time, the conclusion is: Do not use Sogou Pinyin IME.
https://shurufa.sogou.com/
Here is the problem I found last month.
The blue circle with the mouse arrow is always there. When I boot the PC, it is normal. After a while, I opened a browser or ran some programs, and the circle came.
I tried to check every spot in my Windows installation. Such as system drivers, antivirus programs, open Firefox, or Chrome. But the same results.
I knew something is running behind the screen. It is the reason for the blue circle.
I did not think about Sougo pinyin. I used it for many years, since Google Pinyin is gone.
Until I saw some news on Google News.
Vulnerability in Tencent’s Sogou Chinese Keyboard Can Leak Text Input in Real-Time
Almost Every Chinese Keyboard App Has a Security Flaw That Reveals What Users Type
So, I uninstalled the Sogou Pinyin IME. I re-enabled the Microsoft Pinyin.
The blue circle disappeared immediately. Now, it has been almost one month. I believe that the Sogou Pinyin did something behind me. I don’t like it. I know nobody likes this kind of thing. I have to post it and let everyone know it.
Hi, I’m experiencing the same issue with Sougou as you—the blue circle keeps appearing, and my PC is running even slower than the 10 yrs old one. Have you found any good replacements for Sougou IME?
I just use the IME shipped with Windows. It is also good. Not fancy, but simple.