"Synthesis maps have % increased pack size" idols not working

As the title suggests I have added 4 "Synthesis maps have % increased pack size" for a total of 118% pack size increase. Upon entering the map the reflected pack size number listed did not accurately reflect the idols effect. With a base 25% pack size on synthesis maps, the maps still showed a number on average around 38%. This number being similar without any idol effects on the map leads me to believe that the synthesised maps not being affected by the atlas tree is still relevant to the idols themselves.
Reference # 2403046915

Bump. Same issue confirmed on my side. Was super hyped for like 125% increased pack size.

Also seeing this issue. No noticeable difference between synthesis maps with "Synthesis maps have % increased pack size" idols vs without

Bump. It doesn't work.

can confirm these idols do not appear to do anything

Same issue, don't see any effect from them.

Bump - still seeing this issue (and unfortunately found this thread after buying four idols with this mod...)

Bump, also bought full set of idols ran a few synthesized maps with and without. Doesn't seem to be any difference. Modifiers are not showing a difference.

Maven cant cast up the stakes also. as OP says, feels like all idols are disabled because synthesised maps not being affected by the atlas tree

bump same issue