Yep, Mabula has been focused on getting 1.083 out with a lot of new things. We're now moving to Java 17, I've notified Mabula about sequator again just in case, but I'm not sure myself in which version that's addressed.
There are several free pieces of software available that will create star trails, but in this example we are using Sequator (sites.google.com/view/ sequator). The software is free, easy to use, it stacks very quickly and it also has several useful features that can be applied to the output image during the stacking process, reducing the need for further image processing.
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