Looping ambient sounds missing or too quiet in Monolith maps

In campaign maps, all looping ambient sounds (background audio that continuously plays) function correctly at an appropriate volume. However, in almost all Monolith maps, these looping ambient sounds are either completely missing or extremely quiet.
This issue is most noticeable in every Tomb of the Erased.

Additionally, in “Snowbound Grave”* (located in the Monolith) , the environment depicts winter with falling snow, but the ambient sound used is that of a summer forest, which does not match the setting.