2018 unusable after 2019 installed

[Davidk]

I have a student who has both 2018 and 2019 installed. He says the 2018 installation has become unstable/unusable since he installed 2019.

Based on the feedback from various users on this effect, a fix would be to uninstall 2018, and then re-install it. However he's reluctant to do that because he's concerned that the reverse effect may also apply (ie, installing 2018 damages 2019) and leave him with 2 unusable installations. The commentary I've seen suggests that a 2018 install doesn't impact 2019. However, I would like some comment from those who have experienced a damaged 2018 as a result of 2019, and re-installed 2018 with specific reference to any impact on 2019.

In the past this would have been a clear-cut no. But nobody expected the effects of 2019 on 2018: ambushed by incompetence, and I know there are a number of outstanding bug issues arising from that that have not been rectified as yet.

So, comments on this please.

[Ken Berry]

Not to the point that VS 2018 is unusable. Just the reported cases where the Home tab in VS 2018 disappears after VS 2019 is installed; plus the same thing happening to one or two of the third party plug-ins (Boris?).