Looking on the internet deeply has found these results:

the issue is being observed regularly is the most popular phrase on the web.

the issue has been observed on regular basis 129,800,000 results on the web	the issue is being observed regularly 170,700,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	The issue is not insignificant and it is estimated that �1.5 billion worth of wind farm development is being delayed. In addition, the issue is being placed on the agenda of the International Maritime Organisation. The issue is being considered further in the context of the Green Paper. Maybe sometimes the issue is speed not everything is being done at the same time. I do not know why the issue is being raised again now. The issue is not as black and white as it is being presented. It is up to the Member States to complete this list as the issue is being examined in Council.

the issue has been observed on regular basis

129,800,000 results on the web

the issue is being observed regularly

170,700,000 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

The issue is not insignificant and it is estimated that �1.5 billion worth of wind farm development is being delayed.
In addition, the issue is being placed on the agenda of the International Maritime Organisation.
The issue is being considered further in the context of the Green Paper.
Maybe sometimes the issue is speed
not everything is being done at the same time.
I do not know why the issue is being raised again now.
The issue is not as black and white as it is being presented.
It is up to the Member States to complete this list as the issue is being examined in Council.