unclickable text objects, strange behavior

 
Sometimes I work with text objects in the chart, for example in one of my EAs i have a text object that i can move around with the mouse and it will give me a profit estimation based on the position of the text object and write the result of the calculation into the text object. This involves using ObectGet() on every tick and ObejctSet() and ObectSetText() calls to update the information I want to display.

Usually this works perfectly fine but sometimes MT4 enters a state where I am completely unable to click and select this text object with the mouse. The code still works, Object properties such as time and price are still readable and text, color, etc. can still be updated and will be displayed but i simply can not reach this one text object with the mouse anymore, all other objects are fine. I then have to open the object list and select it from there to be able to move it around again.

On rare occasions i have also seen this behavior with text objects that were never used by any mql4 code, just ordinary text objects placed on the chart to write my thoughts before I made a screenshot for a forum posting for example. Sometimes I just can't click and select these objects anymore.

Is there a known workaround for this bug, something I could do with the object on every tick to prevent this and keep it functioning under all circumstances?