I have the Photoshop status bar set to show the current image pixel dimensions. Usually (though not always) when I resize the image (Image -> Image Size), the status bar display does not change - it displays the pre-resize dimensions. The image is resized, and going into the Image Size dialog shows the correct size, as does the full display when the status bar is clicked.
In the above image the original dimensions were 3028 px x 2260 px, resized to 2500 px x 1866 px. Clearly the status bar is not getting updated. This behavior started after a recent update.
I've tried to reproduce it here with an image of the dimensions and depth you described and have not been able to do so. In every case I'm seeing the image dimensions update a noticeable fraction of a second after completing the Image Size operation. I tried with default preferences and those I prefer for editing, as well as with some other key settings enabled or disabled.
Could you please capture your Help > System Info data and paste it into a post here? Alternatively, you may contact me via eMail directly at carboni@adobe.com.
As a potential workaround, just because we have seen it correct odd problems, could you please try resetting your Photoshop preferences. One way is to go into Edit > Preferences > General and click the [ Reset Preferences on Quit ] button, then close Photoshop and restart it.
I'm opening up a problem report and we will look for reasons that status field might not be updated.