Slider tool does not work without a label when controlling brightness/color temp

[stinobook]

Bug description

entity slider tool (to control brightness or whatever) of a light does not work without a label

below code from your examples works until you remove the label in position/style or you put placement: none

To Reproduce

from examples:

                - type: slider
                   descr: '#3 test slider'
                   position:
                     cx: 50
                     cy: 81
                     capture:
                       width: 90
                       height: 15
                     track:
                       width: 90
                       height: 4
                       radius: 1
                     thumb:
                       width: 5
                       height: 5
                       radius: 2.5
                     label:
                       # placement can be none, thumb, position (cx,cy)
                       placement: position
                       cx: 83
                       cy: 17
                   entity_index: 1
                   derived_entity:
                     input : '[[[ return state ]]]'
                     state: >
                       [[[
                         if (typeof(entity) === 'undefined') return;
                         if (typeof(state) === 'undefined') return;
                         
                         var bri = Math.round(state / 2.55);
                         return (bri ? bri : '0');
                       ]]]
                     unit: >
                       [[[
                         if (typeof(state) === 'undefined') return undefined;
                         return '%';
                       ]]]
                   user_actions:
                     drag_action:
                       update_interval: 200          # Update every 200msec
                       haptic: selection
                       actions:
                         - action: call-service
                           service: light.turn_on
                           parameter: brightness_pct
                     tap_action:
                       haptic: light
                       actions:
                         - action: call-service
                           service: light.turn_on
                           parameter: brightness_pct
                   scale:
                     min: 1
                     max: 100
                     step: 1
                     steps: '[1,2,5,6,7,8,9,20]'
                     stepsnew:
                       - stop: 0
                         step: 1
                       - stop: 10
                         step: 5
                   styles:
                     label:
                       text-anchor: middle
                       font-size: 10em
                       font-weight: 600
                     track:
                       fill: url(#sak-light-color-temperature-gradient)
                       fill-opacity: 1
                       stroke-width: 0.1em
                       stroke: white
                     thumb:
                       stroke-width: 1.2em
                       stroke: var(--primary-background-color)
                       stroke-opacity: 1
                       fill: var(--primary-text-color)
                       fill-opacity: 0.8

Expected behavior

working slider. showing both current state and slideable to change it.

Additional context
label can NOT be 'position label placement 'none'
thumb works and position works.

(Optional): Suggested Solution

Any suggested solution to this bug.

[stinobook]

current workaround i found:

use this for style to make it invisible:

                          styles:
                            label:
                              font-size: 0em