No line charts are visible, even if the legends indicate there are data series sent to the node, and the X- and Y-ranges are incorrect as well.
Example flow comparing ISO 8601 timestamps and epoch timestamps:
[{"id":"6b5d5a53d40b1af9","type":"inject","z":"48d14fe7d791d595","name":"Datetime strings","props":[{"p":"payload"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"[{\"timestamp\":\"2024-12-06T12:30:15\",\"dp\":\"dp1\",\"val\":22},{\"timestamp\":\"2024-12-07T16:40:22\",\"dp\":\"dp1\",\"val\":27},{\"timestamp\":\"2024-12-08T13:16:42\",\"dp\":\"dp1\",\"val\":25}]","payloadType":"json","x":320,"y":240,"wires":[["5dcad4539a9e8864"]]},{"id":"5dcad4539a9e8864","type":"ui-chart","z":"48d14fe7d791d595","group":"b429518aee48a6fb","name":"","label":"chart","order":1,"chartType":"line","category":"dp","categoryType":"property","xAxisLabel":"","xAxisProperty":"timestamp","xAxisPropertyType":"property","xAxisType":"time","xAxisFormat":"yyyy-M-d HH:mm","xAxisFormatType":"custom","xmin":"","xmax":"","yAxisLabel":"","yAxisProperty":"val","yAxisPropertyType":"property","ymin":"","ymax":"","bins":10,"action":"replace","stackSeries":false,"pointShape":"circle","pointRadius":4,"showLegend":true,"removeOlder":1,"removeOlderUnit":"3600","removeOlderPoints":"","colors":["#0095ff","#ff0000","#ff7f0e","#2ca02c","#a347e1","#d62728","#ff9896","#9467bd","#c5b0d5"],"textColor":["#666666"],"textColorDefault":true,"gridColor":["#e5e5e5"],"gridColorDefault":true,"width":6,"height":8,"className":"","interpolation":"linear","x":530,"y":280,"wires":[[]]},{"id":"6aa5980609418728","type":"inject","z":"48d14fe7d791d595","name":"Datetime epoch","props":[{"p":"payload"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"[{\"timestamp\":1733484615000,\"dp\":\"dp1\",\"val\":22},{\"timestamp\":1733586022000,\"dp\":\"dp1\",\"val\":27},{\"timestamp\":1733660202000,\"dp\":\"dp1\",\"val\":25}]","payloadType":"json","x":320,"y":320,"wires":[["5dcad4539a9e8864"]]},{"id":"b429518aee48a6fb","type":"ui-group","name":"Chart Examples","page":"d0621b8f20aee671","width":"6","height":"1","order":1,"showTitle":true,"className":"","visible":"true","disabled":"false"},{"id":"d0621b8f20aee671","type":"ui-page","name":"Charts","ui":"b7fd8a2cce8052cc","path":"/charts","icon":"home","layout":"notebook","theme":"5075a7d8e4947586","order":1,"className":"","visible":"true","disabled":"false"},{"id":"b7fd8a2cce8052cc","type":"ui-base","name":"ui7","path":"/dashboard","includeClientData":true,"acceptsClientConfig":["ui-notification","ui-dropdown","ui-control"],"showPathInSidebar":false,"showPageTitle":true,"navigationStyle":"default","titleBarStyle":"default","notificationDisplayTime":5},{"id":"5075a7d8e4947586","type":"ui-theme","name":"Default Theme","colors":{"surface":"#ffffff","primary":"#0094CE","bgPage":"#eeeeee","groupBg":"#ffffff","groupOutline":"#cccccc"},"sizes":{"pagePadding":"12px","groupGap":"12px","groupBorderRadius":"4px","widgetGap":"12px"}}]
I did some more testing, and it seems that the X-Axis Limit caused problems. I thought this parameter was only meant for live data, and not data from a time series database. It only caused problems for epoch timestamps, so I assume this isn't the intended behaviour of clearing stale data. Setting the limit to "Last 100 Weeks" seemed to fix the problem.
