The store header fits the screen it is actually on
The row across the top of the Store page (game art, title, search, sort, filter) ran off the right-hand edge on a Steam Deck. The filter dropdown sat partly off screen, and moving the controller onto it made Steam pan the whole page sideways, pushing the tabs off the left. On a handheld that made the Store page feel broken.
It now measures the space it actually has and lays itself out to fit, the same way the mod rails have since 1.2.2. Large screens keep exactly the layout they had. Narrower ones shrink the search box, narrow the dropdowns, shorten a long game name, and finally drop the game artwork, in that order. The controls keep their words at every size, because an earlier attempt at replacing them with icon squares made them harder to understand, not easier.
The fit is now checked automatically at every screen width from 560 to 1920 pixels, so a layout that would run off the edge fails the build rather than shipping.
If v1.4.0 would not install for you
That was our fault and it is fixed. The v1.4.0 download was packaged wrongly, so the installer refused it and installing from the zip failed silently. The v1.4.0 download has since been rebuilt and replaced, and 1.4.1 is built correctly too. Just run the usual install line and it will work:
curl -L https://raw.githubusercontent.com/RedRanger14/decky-nexus/main/install.sh | shYour API key, settings and installed mods live outside the plugin folder and are never touched by an update.
The release process now refuses to publish a plugin package that cannot install, rather than relying on anyone remembering to check.