1.3.1: new file sometimes doesn't show up until reapplying filter

[fireattack]

I use 3rd party program to stitch images and save them in the same folder:



However, these images don't show up in XnView MP, not even after refreshing:



I have to either:
1) change folder and change back
2) re-click filter->custom (it was already on custom)
to make them appear.

My custom filter setting:

[xnview]

if you tick 'all other files', it is better?