Reproduction steps:
1. Open the attached project "ReproProj"
2. Open the Addressable Groups window (Window > Asset Management > Addressables > Groups)
3. Click Build > New Build > Default Build Script
4. In the Addressables Report window, select the latest report and open the “Potential Issues” tab

Expected result: “Space saved if De-duplicated” is 2.84 MB
Actual result: 435.58 MB is present for “Space saved if De-duplicated”

Reproducible with: 1.22.3 (2022.3.56f1), 2.3.7 (6000.0.34f1, 6000.1.0b2)

Testing environment: Windows 10 Enterprise 21H2, Apple M1 Max (macOS 15.2 24C101 Darwin 24.2.0)
Not reproducible on: No other environment tested

Note:
- Asset contains 1 parent asset and 76 sub-assets and is duplicated 154 times, but the entire asset is 2.84 MB rather than 2.84 MB * 154 = 435.58 MB