Tested the issue on reported version 60.0.3112.113, latest stable 61.0.3163.79 and latest dev 62.0.3202.18 using Ubuntu 14.04 and is not reproducible with below steps.

1.Clicked Person name on top right corner of browser and clicked "Manage people"
2.Now User manager window with Persons available is seen
3.Clicked on Person name[say Person1] on top right corner and clicked on another avialable person[Say Person 2]
4.Person 2 is opened and able browse the net with no crash seen.

@Reporter: Could you please let us know if we missed any thing and could you please provide crash ids from chrome://crashes for further triaging of this.

Thank you for responding.
I still have the issue, but when going to chrome://chrashes. it says 'Crash reporting is not available in Chromium.'
Chromium is not asking me to update, so I assumed I was on the latest version, but maybe that's because ubuntu's repos are behind.
I am running Ubuntu 16.04, but I doubt it would make that much difference.

Thank you for providing more feedback. Adding requester "sc00335628@techmahindra.com" to the cc list and removing "Needs-Feedback" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

I have switched to chromiums repositories, updated (now on 61.0.3163.79) and the multi user ui chrashing problem has gone.
The problem about the internet hasn't. Should this be closed and another opened? or is just leaving this open fine.
I will also try closing primary user, deleting and re-adding user etc.

OK, another update, I tried adding another user, signed in with my other account, and the internet is fine.
I then deleted the one that wasn't working, added it, signed in (with the account that wasn't working earlier) and the internet isn't working.
May I add that the account that isn't working is controlled by my school. When signing in on chromebooks etc at school, the internet works.

I have a couple of questions:
1. Could you please clarify what do you mean by "internet isn't working"? What URL do you open to check it and what error does it produce?
2. 'Crash reporting is not available in Chromium.' suggests that you're using Chromium instead of Chrome. Having crashdump could help in debugging this issue. Can you try reproducing the crash in Chrome?

1. Any url, for example typing in a query to google, or actually google.co.uk. For a url, I get the bt webaddresshelp page, except it only displays 'Error'
For a google search, I get:
This site can’t be reached

The web page at https://www.google.com/search?q=test&oq=test&aqs=chrome..69i57.779j0j7&client=ubuntu&sourceid=chrome&ie=UTF-8&safe=active&ssui=on might be temporarily down or it may have moved permanently to a new web address.
ERR_TUNNEL_CONNECTION_FAILED

Screenshots attached.

2. This issue has been resolved since I have moved to Chromium's repositories instead of Ubuntu's.

Deleted: google search.png 115 KB

	google search.png 115 KB View Download

Deleted: url.png 98.7 KB

	url.png 98.7 KB View Download

I'm going to close this out as WontFix since you've resolved the issue

OK, and should I then create another issue about the internet not working on my school account? (after of course updating and trying again)

Sorry for not getting back earlier, I recently spoke to the network manager at my school, and they confirmed that it was an issue to do with proxies and the school as they use one, and it will be fixed by the end of the month.