display -update 1 filename

[peter7]

In order to display a picture I used the command "display pic1.bmp" which works fine.
When trying the command "display -update 1 pic1.bmp" again a window pops up.
However, when I overwrite the file pic1.bmp by another picture with the command "cp pic2.bmp pic1.bmp" the ImageMagick-Window (showing the picture) is closed.

From the manual I would expect that the displayed picture would be refreshed (see man display):
-update seconds --> (detect when image file is modified and redisplay)

Any ideas what is going wrong?

Manny thanks in advance.
Peter

[raspman]

Have same problem on
IM 8: 6.8.9.9-5+deb8ul
Raspberry Pi 4.1.20

Display shows first image, then .jpeg file refresh stops Display.

Any fixes available?

Thanks,

- Tom