Sentence examples similar to have often proven problematic from inspiring English sources

The bells that draw the knights to the Grail ceremony at Monsalvat in Acts 1 and 3 have often proved problematic to stage.

Linking road casualty information from the police and patient data from health authorities to assist road safety research has been the focus of several previous studies worldwide, 12 but has often proved problematic due to incompatibilities between datasets limiting (sometimes significantly) the number of successful casualty:patient matches that can be made for further detailed analysis.

Mistranslations during negotiations have often proven contentious.

Breakthroughs have often proved illusory.

Locally, the effect has often proved limited.

With Haas playing the deuce side and Federer on the ad side, both had their stronger stroke in the middle of the court, a crowding that often proved problematic for the first-time pairing.

Scheduling singers many years in advance often proves problematic.

In practice, this often proves problematic.

In embryos that pass these mid-embryogenesis stages, trachea formation often proves problematic.

The definition of an appropriate reference standard is critical but often proves problematic.

I've made lots of things that have proven problematic for people.