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Yes, please do specify what specific version you are using and having trouble with.Please remember to post which platform and version of Quicken you are using. In Quicken Mac 2019, for instance, the problem described does not occur with New Reports. That is, columns widths are retained however you leave them set. (The old reports from the Quicken Essentials era don't even have adjustable columns, and these reports will be removed in a future upgrade.)
Another suggestion: use the Report a Problem option on the Quicken Help menu to report this to Quicken. They may not consider it a bug -- although not retaining user-set columns widths seems like it might not be "performing as designed" -- but it's a legitimate problem you face using Quicken. Note that you will not get a reply from Quicken from such a submission... but it has a quicker chance of being passed on to the developers than an idea request here. the more people who report the same thing, the more likely it will catch someone's eye.