diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 1c064f5..a13bad6 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -16,7 +16,7 @@ repos:
     hooks:
       # Run the linter.
       - id: ruff
-        args: [ --fix ]
+        args: [ "--select", "I", "--fix" ]
 
       # Run the formatter.
       - id: ruff-format
@@ -27,10 +27,3 @@ repos:
     hooks:
       - id: mypy
         additional_dependencies: []
-
-  # Sort imports alphabetically
-  - repo: https://github.com/PyCQA/isort
-    rev: 6.0.1
-    hooks:
-      - id: isort
-        args: ["--profile", "black"]
diff --git a/libqfieldsync/offliners.py b/libqfieldsync/offliners.py
index 0a9c68e..3a66597 100644
--- a/libqfieldsync/offliners.py
+++ b/libqfieldsync/offliners.py
@@ -10,6 +10,7 @@
     Qgis,
     QgsCoordinateReferenceSystem,
     QgsCoordinateTransform,
+    QgsCsException,  # type: ignore[import]
     QgsDataSourceUri,
     QgsFeatureRequest,
     QgsField,
@@ -113,6 +114,11 @@ def convert_to_offline(
         if bbox and bbox.isFinite():
             only_selected = True
             for layer in layers:
+                if layer.type() != QgsMapLayer.LayerType.VectorLayer:
+                    continue
+
+                assert isinstance(layer, QgsVectorLayer)
+
                 if Qgis.versionInt() >= 33000:  # noqa: PLR2004
                     no_geometry_types = [
                         Qgis.GeometryType.Null,
@@ -131,8 +137,14 @@ def convert_to_offline(
                     layer.removeSelection()
                 else:
                     tr = QgsCoordinateTransform(project.crs(), layer.crs(), project)
-                    layer_bbox = tr.transform(bbox)
-                    layer.selectByRect(layer_bbox)
+
+                    try:
+                        layer_bbox = tr.transform(bbox)
+                        layer.selectByRect(layer_bbox)
+                    except QgsCsException as err:
+                        logger.warning(
+                            f"Failed to transform project CRS {project.crs().authid()} bbox to layer {layer.name()} CRS {layer.crs().authid()} bbox within `QgisCoreOffliner`: {err}. All features will be offlined for this layer."
+                        )
 
                     # If the selection by BBOX did not select anything, make sure we fool `QgsOfflineEditing` something is selected.
                     # Otherwise when `layer.selectedFeatureIds().isEmpty()`, `QgsOfflineEditing` dumps all features.
@@ -437,8 +449,14 @@ def _convert_to_offline_project(
                 tr = QgsCoordinateTransform(
                     project.crs(), layer_to_offline.crs(), project
                 )
-                layer_bbox = tr.transform(bbox)
-                request.setFilterRect(layer_bbox)
+
+                try:
+                    layer_bbox = tr.transform(bbox)
+                    request.setFilterRect(layer_bbox)
+                except QgsCsException as err:
+                    logger.warning(
+                        f"Failed to transform project CRS {project.crs().authid()} bbox to layer {layer_to_offline.name()} CRS {layer_to_offline.crs().authid()} bbox within `PythonMiniOffliner`: {err}. All features will be offlined for this layer."
+                    )
 
             if filters_mapping[datasource_hash]:
                 request.setFilterExpression(filters_mapping[datasource_hash])