Duplicated browser tabs can share the same Hyper tab-id and keep route state in lockstep

[jtlocsei]

Hi, I think I’ve run into a tab identity issue in Hyper.

If I open a Hyper page and then duplicate the browser tab, the duplicated tab doesn’t seem fully independent from the original. After that, navigation/state that should be tab-local moves in lockstep between the two tabs.

For example:

Open a Hyper app page.
Duplicate the browser tab.
In one tab, navigate to another route with h/navigate or update a path-cursor.
The other tab’s URL/route also changes.

Expected:
Duplicated tabs should become independent Hyper tabs.

Actual:
Duplicated tabs behave like one shared Hyper tab until one gets a fresh reload.

I was seeing this with h/navigate and query-param-backed UI state.

Fresh separately-opened tabs seemed fine for me; the issue showed up specifically when duplicating an existing tab.

Happy to try a minimal repro app if that would help.

It’s not a big deal for me, and I worked around it app-side by detecting same-tab reuse in the browser and forcing a one-time reload.

[rschmukler]

Hey, thanks for the report! What browser are you using"duplicating" with? I'll have to look at what it entails.

[jtlocsei]

Chrome 146 on MacOS 15.7.2. The way I'm duplicating a tab is

• click in URL bar
• press Cmd+Enter on keyboard (on windows it's alt+enter but I haven't checked on windows yet)

Tried making a minimal repro but it's more subtle than I thought - maybe only happens when there's a state atom, or when there are query strings, or something. I'll have a go at making a minimal repro over the next couple of days.