# Potential bug with workflow using SAHI

**URL:** <https://discuss.roboflow.com/t/potential-bug-with-workflow-using-sahi/9463>\
**Category:** 🛠️ Feature Reqs\
**Created:** [April 14, 2025, 5:54pm UTC](https://discuss.roboflow.com/t/potential-bug-with-workflow-using-sahi/9463 "2025-04-14T17:54:26Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![matbyp](https://avatars.discourse-cdn.com/v4/letter/m/e36b37/32.png) [@matbyp](https://discuss.roboflow.com/u/matbyp)\
**Post date:** [April 14, 2025, 5:54pm UTC](https://discuss.roboflow.com/t/potential-bug-with-workflow-using-sahi/9463/1 "2025-04-14T17:54:26Z")

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when i do tiling for inference, i set tile size 300x600 pixels, then model made a predictions (quite okay), but when i looked at json

 ![image](https://canada1.discourse-cdn.com/flex029/uploads/roboflow1/original/2X/3/3eb729c12876c272ce071755c7676fd43dfec37d.png)  
the property image has not size of the original image but of a tile, co i cannot use it to translate the position of bbox in pixels to its relative position.

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**Author:** ![Jacob\_Witt](https://yyz1.discourse-cdn.com/flex029/user_avatar/discuss.roboflow.com/jacob_witt/32/347_2.png) [@Jacob\_Witt](https://discuss.roboflow.com/u/Jacob_Witt)\
**Post date:** [April 14, 2025, 9:10pm UTC](https://discuss.roboflow.com/t/potential-bug-with-workflow-using-sahi/9463/2 "2025-04-14T21:10:35Z")

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Are you using the `Detections Stitch` block to put the tiles back together?

 ![CleanShot 2025-04-14 at 17.09.55](https://canada1.discourse-cdn.com/flex029/uploads/roboflow1/original/2X/1/1aeac2236250c73ef216e95cfd37a3e5966e3058.png)

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**Author:** ![matbyp](https://avatars.discourse-cdn.com/v4/letter/m/e36b37/32.png) [@matbyp](https://discuss.roboflow.com/u/matbyp)\
**Post date:** [April 15, 2025, 7:20am UTC](https://discuss.roboflow.com/t/potential-bug-with-workflow-using-sahi/9463/3 "2025-04-15T07:20:45Z")

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yessir i do

 ![image](https://canada1.discourse-cdn.com/flex029/uploads/roboflow1/original/2X/2/2bb5b95aa4bd25db2023a674f04ddf0de493a095.png)

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**Author:** ![matbyp](https://avatars.discourse-cdn.com/v4/letter/m/e36b37/32.png) [@matbyp](https://discuss.roboflow.com/u/matbyp)\
**Post date:** [April 16, 2025, 8:49pm UTC](https://discuss.roboflow.com/t/potential-bug-with-workflow-using-sahi/9463/4 "2025-04-16T20:49:04Z")

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I should add it has happened with RF-DETR model, if that helps. not sure if its a model type-specific bug, workflow-specific (SAHI).