On Windows XP Service Pack 3,
With Firefox opened, Chrome closed, Construct2 preference in Default Preview Browser: Chrome
Results: Game is opened on Firefox.
With Chrome and Firefox Opened.
Results: Game is opened on Firefox.
Only seen this in WindowsXP. On Windows 7 seems to work fine (only tested r115 on Win7)
All browsers are installed on default directories on main partition of main disk. All latest versions.
Maybe a bug, maybe not. I'm stuck with winxp on my office and that's sucks.