I need help on figuring this out! Please
When you relax, all the fat is falling down to your lower belly, and stretching the skin out and away from abdominal muscles.
When you flex, the fat gets spread out over a larger surface area, showing the outline of what lies underneath.
This situation is true for a lot of people.
If you want your abs to show while relaxing, you need to lose some of that fat. But just so it's said; this is only beneficial from a vanity standpoint. From a health perspective, there is very little reason to desire a constantly visible sixpack.
As a sidenote, it's worth pointing out that you may have an anterior pelvic tilt, judging by your second picture. Is that something you're aware of?
Hope you still can read this. This is absolutely not normal. I have had this issue for three years. During these years I was trying to fix it, but I couldn't. Because of the bloating, I wasn't able to eat any food, I stopped two semesters from college, and quit my job. It started with bloating then hemorrhoids then finally gas and fecal incontinence. ONLY LAST WEEK (7 days ago) I figured out the solution to this problem. It was tight hip flexors which will cause the abdominal stuff to stick out. You need to release your psoas and decompress your lumbar spine. Also strengthen your glutes and your actual abs! (Cause a lot of times we depend on psoas "lower back" during abs excersises). This is my experience and many has benefited from this. I just wish that more people will stop suffering from IBS and bloating.