Presentation Page Bug

In Tempera Settings , Presentation Page Columns
Example: i set the height 300 and width 318 , after i publish the post, the image show height 300 and width 318
then i change the setting height 400 and width 318 , and i publish another new post, and the image show height 400 and width 318

yeah, that’s correct, but the problem is the old post don’t change with the new setting. We use height 400 and width 318 and the old post still use height 300 and width 318, hope this can be fixed