This issue seems to have been addressed today, the UI on my laptop again allows me to advance the timeline. Very quick and effective response, I appreciate that!

@Ondřej-Šutera - I am using a laptop that does have a touchscreen but I never use it. I use much bigger screens that do not support touch. I should be able to use my mouse to advance the timeline, this is ridiculous!

@murfnsb - I agree. The lack of ability to manually advance the timeline and having to SLOWLY play it to see how the forecast is changing is a deal-breaker for me. I do not know what the product team was thinking, I really hope they restore this functionality as soon as possible.