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Current Behavior

Reported by enterprise customer on ticket 4430.

This appears to be a regression introduced in 2.26.0, as I am unable to reproduce on 2.25.3.

To reproduce you can populate a template with some parameters like:

data "coder_parameter" "cpu" {  name         = "cpu"  display_name = "CPU"  description  = "The number of CPU cores"  default      = "2"  icon         = "/icon/memory.svg"  mutable      = true  option {    name  = "2 Cores"    value = "2"  }  option {    name  = "4 Cores"    value = "4"  }  option {    name  = "6 Cores"    value = "6"  }  option {    name  = "8 Cores"    value = "8"  }}data "coder_parameter" "git_repo" {  name         = "git_repo"  display_name = "Git repository SSH URL"  description  = "The SSH URL of the git repository to clone"  type         = "string"  icon         = "/icon/git.svg"  mutable      = true}data "coder_parameter" "home_disk_size" {  name         = "home_disk_size"  display_name = "Home disk size"  description  = "The size of the home disk in GB"  type         = "number"  icon         = "/emojis/1f4be.png"  mutable      = false}

Note thathome_disk_size does not have a default, whilecpu defaults to 2.

Next, navigate to a crafted URL which makes use ofURL Autofill (no experiment flag needed) which references the relevant template such ashttps://mycoder.tld/templates/coder/ubuntu-coder-dev-anth/workspace?param.git_repo=https://github.com/someone/somerepo&param.cpu=8&param.home_disk_size=2000 and the values on the page will be correctly populated. If I then modify one of the three values, i.e.git_repo, then the value forcpu will reset to 2 and the value forhome_disk_size will be reset to null/empty (as there is no default for this parameter).

In 2.25.3 the behaviour I observe is each parameter is able to be independently modified without issue.

In both versions tested the template has dynamic parameters enabled.

A reproduction video is attached. I used Firefox Developer Edition 144.0b8 on MacOS to reproduce.

I checked the browser console and saw no errors before/after, and no network calls appear to be made as part of this.

Relevant Log Output

Expected Behavior

The behaviour which was present in 2.25 - I should be able to independently modify each parameter value.

Steps to Reproduce

ReferCurrent Behaviour section for steps and reproduction video.

Environment

• Host OS: Kubernetes
• Coder version: 2.26.0, 2.26.1

Additional Context

No response