I notice you're asking for a specific feature related to Resident Evil 3 (the 2020 remake) for a particular build ( 5269288 ), which appears to be tied to an unofficial or cracked release (since official Steam builds don't typically list DLC in that format).
Resident Evil 3 (Build 5269288) is a specific version of the 2020 remake that was released around October 1, 2020. This build is frequently cited in community discussions and repacks alongside "Update 3" and two specific DLC packs that were fully functional at the time of its release. Core Update & Build Details 5269288 (Released Oct 1, 2020). resident evil 3 build 5269288 update 3 2 dlc work
If you’re on Build 5269288 and DLCs aren’t appearing: I notice you're asking for a specific feature
: Primarily focuses on performance stability and bug fixes. While Capcom did not release extensive official patch notes for this specific build, it is known to address minor gameplay issues and refine the experience following the game's initial April launch. Core Update & Build Details 5269288 (Released Oct 1, 2020)