In game name : swilling236

Without a water feature, I find myself able to place multiple buckets of water within a minute's time frame.

With a single bucket of water.
I place the water, Take the water
Move short distances, Place the water, Take the water.

With following these steps five different times (Giving time in between), I managed to get the bug to recur two times.
I thought I would see the bug 3 or 4 times, but still managed to get some evidence.
I noticed that I get the error message way more often while trying to recreating this bug.

If you notice the "Tree Feller" Cooldown in these pictures I'm placing water ~15 seconds apart
after moving a short distance.

 

I keep one bucket of water on me while mining (where i noticed the bug) and every time i place the water, i let it update/spread a little before taking the water source back. So i was repeating the same situation here.
The first picture I took was a little early so you couldn't see the water spreading more than just one block, but it updated like it normally does

After Testing to see if the Second water source was there after I re-logged, Yes it was, but the first water source was removed in the test. So I can not confirm if I place two server-read water sources

 

Okay, I was just trying to help, I know that you have water limited to prevent griefers.
I know that I get this issue more times than others, I mainly realize it while mining and when i run into lava pools