That db4o simply returns cached objects instead of more implicitly handling them is something of a contentious issue.

Db4o仅仅返回缓存对象，而不对其更多地进行隐式处理，这是一个有争议的话题。

youdao

NATO enlargement has been a contentious issue at times, not only among NATO members, but also with Russia, which sees the expansion of the alliance eastward as a threat.

北约扩展的行动已经多次引发争议，不仅在北约成员之间，还和俄罗斯发生争论。俄罗斯将北约向东扩展的行动看成是一个威胁。

youdao

His imprisonment had been a contentious issue in Israel.

他的被捕在以色列一直是一个有争议的问题。

youdao

Sharing the "social burden", as it is known, was a contentious issue in the election.

BBC: Israel PM Netanyahu signs coalition deal

Government support for developing new passenger aircraft first emerged as a contentious issue in 1988.

ECONOMIST: Boeing gets huge illegal subsidies, the WTO rules

Bad weather, and how to deal with it, is always a contentious issue when there is everything at stake.

BBC: Cracks show in World Cup