Linux 5.0.0-17-generic #18-Ubuntu SMP Tue Jun 4 15:34:08 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
I normally have image duration set for 1 second. in this case, i use this as a measurement tool, inserting a transparent .png in my timeline for a 1 second measurement.
When working on my projects today, i noticed the image was 2 seconds, which caused me to re-work my timeline. i keep setting the 1 second clip as the default duration but it is not saving or not being respected.