I found that the progress bar is not working as expected. I had several different models where I did the lightbaking. For the first lightmap, the progress was displayed correctly. But for further lightmaps in that scene the blue progress bar disappeared.
I can confirm it hapens for me also. Already thought several times that the app stopped working but it baked correctly
Thanks for the report. We have been able to reproduce this issue and fix it. The fix will be included in the next release.