I have worked in IT for two decades and usually I spend some time working on something in the evenings as well. If you make a clear separation, it's hard to spend time on expanding your knowledge, whether the goal is to use it for the next day at work or for own personal programming / tech projects.

WFH lets me mix those two a lot more and become more efficient. There's less interruptions since I am not going to the office, and also I have supreme "quiet time" after work, usually between 9pm and midnight.