@SlackHQ FYI on Production 4.10.3 64-bit 5d69ecb-s@1604046390 on Fedora, the client is activating 'back' functions on both the click _and_ release of a dedicated mouse back button, resulting in going back twice in a single click.
Sorry Alex! That doesn't sound right. Does this also occur when using Slack in a web browser? If it's only occurring in the app, please try a couple of reloads (CTRL+SHIFT+O). Let us know how it works out.