Up until this version of layout, dimension ticks were always a slightly heavier line-weight than the dimension lines. In 2025 the dimension ticks are the same weight as the dimensions lines, why the change after all these years, in my opinion this does not look as good. Users should either be given the option to size the ticks independently, or the ticks should be returned to the slightly heavier weight as in all previous versions.
Your profile says you joined in 2015, but you’ve only read 5 minutes. Welcome back after 10 years - this is an interesting one to bring you out of forum hibernation 
Yes, a long time, but steady SketchUp user since 2005. Not many issues to be concerned about over the years but Layout 2025 has some issues, big ones and small ones. Small ones I was advised to report here, big ones are direct to SketchUp support.
I am all for adding a setting for this, but I think the new way is better for my eye. Having started my career with Rotring pens, no way would I have switched to a different pen to draw the ticks when dimensioning..
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