After upgrading to Composer 13, I have encountered quite a few issues. Here are a few that are more annoying than others:
(1) For a big file (with more than 30,000 lines), if I start typing something I see in the bottom left corner of the VS that "parsing file" is going on. See the attached picture. It takes a long time for it to finish. (I can keep typing without seeing what is being typed. Eventually, all the text does appear.)
(2) Syntax coloring is lost in debug mode. I see that this has been reported; hoping to see it fixed in update 1.
(3) I am also seeing that when running program with debug (in Visual Studio), it takes a long time for it to arrive at the first break-point. In the bottom left corner I see that it is loading c:\windows\ *.dll. I have already set _NO_DEBUG_HEAP=1 through VS properties window. In some cases when I removed all the debug break points this issue went away. Note that I had exactly same number of breakpoints in the project before upgrading to XE13 and there was no such issue.
(4) Lastly, as everyone is seeing, this forum's new design is really something one has to learn to live with.