Yes, on all newly uploaded images, like png and jpg. (Including existing images when downloaded and reuploaded again.) I'm using GD.
On April this year, it was working fine. Then my license got expired, which I left for some time in this state, without really using the forum. (I'm still the only person on that forum, apart from spammers.) I recently renewed the license, did a manual update by uploading the files myself, and then noticed the image problem.
The requirements test ips4.php says:
I'm using Centos 8 and MariaDB 10.3.17, which is equivallent to MySQL 5.7, if correct.