Unable to reproduce the issue on reported chrome version 64.0.3282.39 and on the latest canary 65.0.3309.0 with the below mentioned steps.
1. Launched chrome, Copied https://imasml-theater-wiki.gamerch.com/セクシークロコダイル　徳川まつり
2. Pasted it into address bar/Omnibox then clicked enter
3. Tried by givng an additional space between "ル　徳" in another tab

We observed both the URLs gave similar results. Attaching the screen cast of the same.

@Reporter: Could you please check the screen cast and let us know if we have missed any steps while reproducing the issue. Any further inputs from your end helps us to triage the issue in a better way.

Thanks!

Deleted: 798523.mp4 2.4 MB

	798523.mp4 2.4 MB View Download

You did it wrong. It's supposed to be ONE full-width space "　" (U+3000), not two normal half-width spaces. So manually add one more space won't work.

The actual link should be (after URI encoding): https://imasml-theater-wiki.gamerch.com/%E3%82%BB%E3%82%AF%E3%82%B7%E3%83%BC%E3%82%AF%E3%83%AD%E3%82%B3%E3%83%80%E3%82%A4%E3%83%AB%E3%80%80%E5%BE%B3%E5%B7%9D%E3%81%BE%E3%81%A4%E3%82%8A"

And because Chrome location bar *always* replace it when you are pasting, you have to find a way to type that full-width space directly (I use Japanese input method to do that, not sure about you unfortunately).

See: https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms 

They're mainly used in CJK, and full-width space is prominently used in Japanese.

Another observation: 

Chrome will convert other full-width characters to their half-width counterparts, but only when you hit "enter": try ｂｉｎｇ．ｃｏｍ  (Firefox didn't do this either, just for comparison).
Only the full-width space will be converted at pasting (but regardless, it will mess up the URL I provided if you want to input it from location bar other than from link).

Thank you for providing more feedback. Adding requester "vamshi.kommuri@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

Able to reproduce this issue on reported version 64.0.3282.39 and on latest canary 65.0.3317.0 using Windows 10, Mac 10.12.6, Ubuntu 14.04, this issue is seen from M50[50.0.2661.0]. Hence considering this issue as Non-Regression and marking as Untriaged.

Thanks!        

Thanks for the report.  This is a similar issue to bug 764512.  (It's not a duplicate though.)

This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

Sorry for the inconvenience if the bug really should have been left as Available.

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