cell line numbers fail to display for all executed cells

Did a clean windows install on Oct 11. Followed that day or the next by anaconda windows install. Version 5.0.0 of ipykernel was installed. When running scripts manually or with Restart&Run - cells were being executed in wrong order and some skipped. Could only control by running each cell and waiting until it was completed. See #362

Installed (conda install ipykernel) version 5.0.1 today. For first script I ran, the first 4 cells executed and the line numbers correct.

For the remaining 6 the * remains even after cell execution. If the script is interrupted the correct cell line numbers appear in place of the *.

Ran a second script - first 18 displayed correct cell number after execution. 3 cells have executed and * still present. The 4th still running and than kernel dies. Contrary to message it never restarts. I always restart Windows at this point.

Win 10 Home 1803 build 17134.345
conda 4.5.11
ipykernel 5.1.0
python 3.6.6